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NEET Physics Tutor Doubts 1 to 100 - Physics NEET MCQs

90 ARBTS Physics MCQs from Paper 6 and Paper 7 plus 10 original NEET-style Physics questions with four options, answer tab and solution tab.

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Class 11 And 12 Physics Formula Bank

Class 11

Units, Dimensions And Errors

Dimensional formula: [M^aL^bT^cA^dK^emol^fcd^g]
Velocity [LT^-1], acceleration [LT^-2], force [MLT^-2]
Work/energy [ML²T^-2], power [ML²T^-3]
Pressure/stress [ML^-1T^-2], density [ML^-3]
Impulse [MLT^-1], momentum [MLT^-1], torque [ML²T^-2]
G [M^-1L³T^-2], h [ML²T^-1], e [AT]
Absolute error: Δa = |a_measured - a_true|
Mean absolute error: Δa_mean = (Δa₁ + Δa₂ + ...)/n
Relative error = Δa/a, percentage error = (Δa/a) x 100
For x = a^mbⁿ/c^p: Δx/x = mΔa/a + nΔb/b + pΔc/c

Class 11

Vectors

A_x = A cosθ, A_y = A sinθ
|A + B| = √(A² + B² + 2AB cosθ)
|A - B| = √(A² + B² - 2AB cosθ)
tanα = B sinθ/(A + B cosθ)
A.B = AB cosθ = A_xB_x + A_yB_y + A_zB_z
|A x B| = AB sinθ
Unit vector along A: A/|A|
Position vector r = xi + yj + zk; |r| = √(x² + y² + z²)
Relative velocity: v_AB = v_A - v_B

Class 11

Kinematics

v = u + at
s = ut + (1/2)at²
v² = u² + 2as
s_n = u + (a/2)(2n - 1)
Average velocity for uniform acceleration = (u + v)/2
x = u_xt + (1/2)a_xt², y = u_yt + (1/2)a_yt²
Projectile: T = 2u sinθ/g
Range: R = u² sin2θ/g
Maximum height: H = u²sin²θ/(2g)
Trajectory: y = x tanθ - gx²/(2u²cos²θ)
Horizontal projectile: x = ut, y = (1/2)gt²
Circular motion: v = rω, a_c = v²/r = rω²
ω = 2π/T = 2πf

Class 11

Laws Of Motion

F = ma
Momentum p = mv; impulse J = FΔt = Δp
Conservation of momentum: Σp_initial = Σp_final
Static friction: f_s ≤ μ_sN
Limiting friction: f_L = μ_sN
Kinetic friction: f_k = μ_kN
Angle of friction: tanλ = μ
Angle of repose: tanθ = μ
Banking without friction: tanθ = v²/(rg)
Conical pendulum: T = 2π√(l cosθ/g)
Pseudo force in non-inertial frame: F_p = -ma_frame

Class 11

Work, Energy, Power And Collisions

W = F s cosθ
W = ∫F.dx
K = (1/2)mv²
Work-energy theorem: W_net = ΔK
Gravitational PE near earth: U = mgh
Spring force: F = -kx
Spring PE: U = (1/2)kx²
Power: P = dW/dt = F.v
Efficiency = output power/input power
Centre of mass: r_cm = Σm_ir_i/Σm_i
V_cm = Σm_iv_i/M
Coefficient of restitution: e = (v₂ - v₁)/(u₁ - u₂)
Elastic collision, target at rest: v₁ = (m₁-m₂)u₁/(m₁+m₂), v₂ = 2m₁u₁/(m₁+m₂)
Loss in perfectly inelastic collision = (1/2)μ(u₁-u₂)², μ = m₁m₂/(m₁+m₂)

Class 11

Rotational Motion

θ = s/r, ω = dθ/dt, α = dω/dt
ω = ω₀ + αt
θ = ω₀t + (1/2)αt²
ω² = ω₀² + 2αθ
Torque: τ = rF sinθ
Moment of inertia: I = Σmr²
Rotational equation: τ = Iα
Angular momentum: L = Iω
Rotational KE: K = (1/2)Iω²
Rolling: v = Rω
Rolling KE: K = (1/2)mv² + (1/2)Iω²
Parallel axis theorem: I = I_cm + Md²
Perpendicular axis theorem: I_z = I_x + I_y
Ring/hoop: I = MR²; disc/cylinder: I = (1/2)MR²
Solid sphere: I = (2/5)MR²; spherical shell: I = (2/3)MR²
Rod about centre: I = ML²/12; rod about end: I = ML²/3

Class 11

Gravitation

F = Gm₁m₂/r²
g = GM/R²
Gravitational field: E_g = GM/r²
Potential: V = -GM/r
Potential energy: U = -GMm/r
Escape speed: v_e = √(2GM/R) = √(2gR)
Orbital speed: v_o = √(GM/r)
Time period: T = 2π√(r³/GM)
Kepler law: T² ∝ r³
Total energy of satellite: E = -GMm/(2r)
Binding energy of satellite: GMm/(2r)
g at height h: g_h = g(R/(R+h))² ≈ g(1 - 2h/R)
g at depth d: g_d = g(1 - d/R)

Class 11

Mechanical Properties Of Solids

Stress = F/A
Strain = ΔL/L
Young modulus: Y = longitudinal stress/longitudinal strain
Y = FL/(AΔL)
Bulk modulus: B = -ΔP/(ΔV/V)
Compressibility: K = 1/B
Shear modulus: η = shear stress/shear strain
Poisson ratio: σ = -lateral strain/longitudinal strain
Elastic potential energy per unit volume = (1/2) stress x strain
Energy density = stress²/(2Y) = (1/2)Y(strain)²
Thermal stress for fixed rod: stress = YαΔT
Spring constant of wire: k = YA/L

Class 11

Mechanical Properties Of Fluids

Pressure: P = F/A
Hydrostatic pressure: P = P₀ + ρgh
Buoyant force = ρ_fluidV_displacedg
Continuity equation: A₁v₁ = A₂v₂
Bernoulli equation: P + (1/2)ρv² + ρgh = constant
Torricelli theorem: v = √(2gh)
Viscous force: F = ηA(dv/dx)
Stokes law: F = 6πηrv
Terminal velocity: v_t = 2r²(ρ - σ)g/(9η)
Reynolds number: R_e = ρvd/η
Surface tension: S = F/l = W/ΔA
Excess pressure in liquid drop: ΔP = 2S/R
Excess pressure in soap bubble: ΔP = 4S/R
Capillary rise: h = 2S cosθ/(ρgr)

Class 11

Thermal Properties Of Matter

Linear expansion: ΔL = αLΔT
Areal expansion: ΔA = βAΔT, β = 2α
Volume expansion: ΔV = γVΔT, γ = 3α
Heat: Q = mcΔT
Latent heat: Q = mL
Water equivalent = ms
Heat conduction: Q/t = kA(T₁ - T₂)/l
Thermal resistance: R_th = l/(kA)
Convection cooling: dT/dt ∝ (T - T₀)
Newton cooling: T - T₀ = (T_i - T₀)e^-kt
Stefan law: P = eσA(T⁴ - T₀⁴)
Wien law: λ_mT = b
Kirchhoff law: good absorber is good emitter

Class 11

Thermodynamics

Ideal gas equation: PV = nRT = NkT
First law: ΔQ = ΔU + W
Work: W = ∫P dV
Isobaric work: W = PΔV
Isothermal work: W = nRT ln(V₂/V₁)
Internal energy: ΔU = nC_VΔT
C_P - C_V = R
γ = C_P/C_V
Adiabatic: PV^γ = constant
Adiabatic: TV^γ-1 = constant; T^γP^1-γ = constant
Adiabatic work: W = (P₁V₁ - P₂V₂)/(γ - 1)
Mayer relation: C_P - C_V = R
Heat engine efficiency: η = W/Q_H = 1 - Q_C/Q_H
Carnot efficiency: η = 1 - T_C/T_H
Refrigerator COP = Q_C/W = T_C/(T_H - T_C)

Class 11

Kinetic Theory Of Gases

Pressure: P = (1/3)ρc_rms²
P = (1/3)mn c²
c_rms = √(3RT/M) = √(3kT/m)
c_avg = √(8RT/πM)
c_mp = √(2RT/M)
c_rms : c_avg : c_mp = √3 : √(8/π) : √2
Average translational KE per molecule = (3/2)kT
Total translational KE = (3/2)nRT
Law of equipartition: energy per degree = (1/2)kT
U = (f/2)nRT
C_V = fR/2, C_P = (f+2)R/2
γ = (f+2)/f
Mean free path: λ = 1/(√2 πd²n)

Class 11

Oscillations

SHM equation: a = -ω²x
x = A sin(ωt + φ) or A cos(ωt + φ)
v = ω√(A² - x²)
v_max = Aω
a_max = Aω²
T = 2π/ω, f = 1/T
Spring-mass: T = 2π√(m/k)
Simple pendulum: T = 2π√(l/g)
Physical pendulum: T = 2π√(I/mgl)
Energy: E = (1/2)kA² = (1/2)mω²A²
Potential energy: U = (1/2)kx²
Kinetic energy: K = (1/2)k(A² - x²)
Two springs parallel: k = k₁ + k₂
Two springs series: 1/k = 1/k₁ + 1/k₂

Class 11

Waves And Sound

Wave speed: v = fλ = ω/k
Wave equation: y = A sin(ωt - kx + φ)
Speed on string: v = √(T/μ)
Sound speed in gas: v = √(γP/ρ) = √(γRT/M)
Intensity: I = P/A, I ∝ A²ω²
Sound level: β = 10 log₁₀(I/I₀)
Beat frequency: f_b = |f₁ - f₂|
Doppler: observer towards source f' = f(v + v_o)/v; source towards observer f' = fv/(v - v_s)
String fixed at both ends: f_n = nv/(2L)
Open pipe: f_n = nv/(2L)
Closed pipe: f_n = (2n - 1)v/(4L)
Standing wave node-node distance = λ/2, node-antinode distance = λ/4

Class 12

Electrostatics

Coulomb force: F = (1/4πε₀)q₁q₂/r²
Electric field: E = F/q
Point charge field: E = kq/r²
Potential: V = kq/r
Potential energy: U = kq₁q₂/r
E = -dV/dr
Dipole moment: p = q(2a)
Dipole field axial: E = 2kp/r³
Dipole field equatorial: E = kp/r³
Dipole torque: τ = pE sinθ
Dipole energy: U = -pE cosθ
Electric flux: Φ = E.A = EA cosθ
Gauss law: ∮E.dA = q_in/ε₀
Infinite line charge: E = λ/(2πε₀r)
Infinite sheet: E = σ/(2ε₀)
Conductor surface: E = σ/ε₀

Class 12

Capacitance

C = Q/V
Parallel plate: C = ε₀A/d
With dielectric: C = Kε₀A/d
Series: 1/C = 1/C₁ + 1/C₂ + ...
Parallel: C = C₁ + C₂ + ...
Energy: U = (1/2)CV² = Q²/(2C) = (1/2)QV
Energy density: u = (1/2)εE²
Spherical conductor: C = 4πε₀R
Force between plates: F = Q²/(2ε₀A)
Effective C with dielectric slab thickness t: C = ε₀A/(d - t + t/K)
Charge sharing: Q_total conserved, common V = Q_total/C_eq

Class 12

Current Electricity

Current: I = dQ/dt
Current density: J = I/A
Ohm law: V = IR
Resistance: R = ρl/A
Conductance: G = 1/R
Conductivity: σ = 1/ρ
J = σE
Drift velocity: v_d = eEτ/m
Current: I = neAv_d
Temperature dependence: R = R₀(1 + αΔT)
Power: P = VI = I²R = V²/R
Cells series: E_eq = E₁ + E₂, r_eq = r₁ + r₂
Terminal voltage discharging: V = E - Ir; charging: V = E + Ir
Kirchhoff junction law: ΣI = 0
Kirchhoff loop law: ΣΔV = 0
Wheatstone bridge: P/Q = R/S
Meter bridge: R/S = l/(100 - l)
Potentiometer: E₁/E₂ = l₁/l₂

Class 12

Moving Charges And Magnetism

Lorentz force: F = q(E + v x B)
Magnetic force: F = qvB sinθ
Force on wire: F = BIl sinθ
Biot-Savart: dB = (μ₀/4π) I dl sinθ/r²
Long straight wire: B = μ₀I/(2πr)
Loop centre: B = μ₀I/(2R)
N-turn loop centre: B = μ₀NI/(2R)
Circular arc: B = μ₀Iθ/(4πR)
Solenoid: B = μ₀nI
Toroid: B = μ₀NI/(2πr)
Radius in magnetic field: r = mv/(qB)
Cyclotron angular frequency: ω = qB/m
Time period: T = 2πm/(qB)
Pitch of helix: p = v_parallelT
Force per length between wires: F/l = μ₀I₁I₂/(2πd)
Magnetic dipole moment: M = NIA
Torque on coil: τ = NIAB sinθ
Moving coil galvanometer: θ = NBAI/k

Class 12

Magnetism And Matter

Magnetic moment of bar magnet: M = m(2l)
Axial field short magnet: B = (μ₀/4π)2M/r³
Equatorial field short magnet: B = (μ₀/4π)M/r³
Torque: τ = MB sinθ
Potential energy: U = -MB cosθ
Time period in field: T = 2π√(I/(MB))
Earth field: B_H = B cosδ
Earth field: B_V = B sinδ
Angle of dip: tanδ = B_V/B_H
Tangent law: B = B_H tanθ
Magnetic intensity: H = B/μ₀ - M
Susceptibility: χ = M/H
Relative permeability: μ_r = 1 + χ
Curie law: χ = C/T

Class 12

Electromagnetic Induction

Magnetic flux: Φ = BA cosθ
Faraday law: ε = -dΦ/dt
N-turn coil: ε = -N dΦ/dt
Motional emf: ε = Blv
Rotating coil emf: ε = NBAω sinωt
Self inductance: L = NΦ/I
Induced emf in inductor: ε = -L dI/dt
Energy in inductor: U = (1/2)LI²
Energy density magnetic field: u = B²/(2μ₀)
Mutual induction: ε₂ = -M dI₁/dt
LR growth: I = I₀(1 - e^-t/τ), τ = L/R
LR decay: I = I₀e^-t/τ
LC oscillation: ω = 1/√(LC), T = 2π√(LC)

Class 12

Alternating Current

V = V₀ sinωt, I = I₀ sin(ωt + φ)
V_rms = V₀/√2, I_rms = I₀/√2
Inductive reactance: X_L = ωL
Capacitive reactance: X_C = 1/(ωC)
LCR impedance: Z = √(R² + (X_L - X_C)²)
Current amplitude: I₀ = V₀/Z
tanφ = (X_L - X_C)/R
Power factor: cosφ = R/Z
Average power: P = V_rmsI_rmscosφ
Resonance: ω₀ = 1/√(LC)
At resonance: X_L = X_C, Z = R
Quality factor: Q = ω₀L/R = 1/(ω₀CR)
Transformer: V_s/V_p = N_s/N_p
Ideal transformer: V_pI_p = V_sI_s

Class 12

Electromagnetic Waves

Speed: c = 1/√(μ₀ε₀)
c = fλ
E₀/B₀ = c
Energy density electric: u_E = (1/2)ε₀E²
Energy density magnetic: u_B = B²/(2μ₀)
Average intensity: I = (1/2)cε₀E₀²
Radiation pressure absorbing surface: P = I/c
Radiation pressure reflecting surface: P = 2I/c
Displacement current: I_d = ε₀dΦ_E/dt
Ampere-Maxwell law: ∮B.dl = μ₀(I + I_d)

Class 12

Ray Optics And Optical Instruments

Mirror formula: 1/f = 1/v + 1/u
Mirror magnification: m = -v/u = h_i/h_o
Lens formula: 1/f = 1/v - 1/u
Lens magnification: m = v/u
Lens maker: 1/f = (μ - 1)(1/R₁ - 1/R₂)
Power of lens: P = 1/f(in metre)
Combination of thin lenses: P = P₁ + P₂
Refraction: n₁sin i = n₂sin r
Apparent depth = real depth/μ
Critical angle: sin i_c = 1/μ
Prism: δ = i + e - A
Minimum deviation: μ = sin((A + δ_m)/2)/sin(A/2)
Small prism: δ = (μ - 1)A
Simple microscope: M = 1 + D/f
Compound microscope: M = (L/f_o)(1 + D/f_e)
Astronomical telescope normal adjustment: M = f_o/f_e

Class 12

Wave Optics

Path difference: Δx = d sinθ
Phase difference: Δφ = 2πΔx/λ
YDSE fringe width: β = λD/d
Bright fringe: Δx = nλ
Dark fringe: Δx = (2n - 1)λ/2
Position of nth bright: y_n = nλD/d
Position of nth dark: y_n = (2n - 1)λD/(2d)
Resultant intensity: I = I₁ + I₂ + 2√(I₁I₂)cosφ
Equal source intensity: I = 4I₀cos²(φ/2)
Single slit minima: a sinθ = nλ
Single slit central maximum width = 2λD/a
Resolving power microscope: 1/d = 2μsinθ/λ
Malus law: I = I₀cos²θ
Brewster law: μ = tan i_B

Class 12

Dual Nature Of Radiation And Matter

Photon energy: E = hν = hc/λ
Photon momentum: p = h/λ = E/c
Photoelectric equation: hν = φ + K_max
Stopping potential: eV₀ = K_max
Threshold frequency: ν₀ = φ/h
Threshold wavelength: λ₀ = hc/φ
de Broglie wavelength: λ = h/p = h/(mv)
For accelerated electron: λ = h/√(2meV)
Electron wavelength in Angstrom: λ = 12.27/√V
Matter wave frequency: ν = E/h

Class 12

Atoms

Bohr angular momentum: mvr = nh/(2π)
Radius: r_n = a₀n²/Z
a₀ = 0.529 Angstrom
Velocity: v_n = 2.18 x 10⁶Z/n m/s
Energy: E_n = -13.6Z²/n² eV
Energy emitted/absorbed: ΔE = 13.6Z²(1/n₁² - 1/n₂²) eV
Rydberg formula: 1/λ = RZ²(1/n₁² - 1/n₂²)
Lyman series: n₁ = 1; Balmer: n₁ = 2; Paschen: n₁ = 3
Ionisation energy H atom = 13.6 eV
Excitation energy = E_higher - E_lower

Class 12

Nuclei

Nuclear radius: R = R₀A^1/3
Density of nucleus is approximately constant
Mass defect: Δm = Zm_p + (A-Z)m_n - M
Binding energy: BE = Δmc²
1 u = 931.5 MeV/c²
Binding energy per nucleon = BE/A
Radioactive decay: N = N₀e^-λt
Activity: A = λN
A = A₀e^-λt
Half-life: T_1/2 = 0.693/λ
Mean life: τ = 1/λ
After n half-lives: N = N₀/2ⁿ
α decay: A decreases by 4, Z decreases by 2
β^- decay: A same, Z increases by 1
β⁺ decay: A same, Z decreases by 1
Q value = (mass initial - mass final)c²

Class 12

Semiconductors And Logic Gates

Conductivity: σ = neμ_e + peμ_h
Intrinsic semiconductor: n = p = n_i
Mass action law: np = n_i²
n-type: electrons are majority carriers
p-type: holes are majority carriers
Diode current: I = I₀(e^eV/kT - 1)
Rectifier ripple frequency half-wave = f, full-wave = 2f
Zener diode works in reverse breakdown
Transistor current: I_E = I_B + I_C
α = I_C/I_E, β = I_C/I_B
β = α/(1 - α), α = β/(β + 1)
AND: Y = A.B
OR: Y = A + B
NOT: Y = A
NAND: Y = A.B
NOR: Y = A + B

Class 12

Communication Systems

Speed of EM wave: c = fλ
Wavelength: λ = c/f
Antenna minimum height: h = λ/4
Modulation index: μ = A_m/A_c
AM wave: s(t) = A_c(1 + μcosω_mt)cosω_ct
Bandwidth for AM = 2f_m
Bandwidth for FM = 2(Δf + f_m)
Range of TV tower: d = √(2Rh)
If receiver height h_r is included: d = √(2Rh_t) + √(2Rh_r)
Number of channels = total bandwidth/bandwidth per channel
Power in AM: P_t = P_c(1 + μ²/2)

Question 1 ARBTS Paper 6 Q1

A solid sphere of radius R is uniformly charged with charge density ρ in its volume. A spherical cavity of radius R/2 is made in the sphere as shown. Then electric potential at the centre of sphere will be

NEET Physics diagram p6_q01 — Kumar Physics Classes +919955846145

Question 2 ARBTS Paper 6 Q2

Three short dipoles each of dipole moment of magnitude p are placed on a circle of radius R as shown. The magnitude of electric field intensity at centre will be

NEET Physics diagram p6_q02 — Kumar Physics Classes +919955846145

Question 3 ARBTS Paper 6 Q3

Equipotential surfaces corresponding to electric field due to infinite charged sheet are

Question 4 ARBTS Paper 6 Q4

A galvanometer has resistance 100 Ω. It gives full scale deflection on passing 10 mA current through it. To convert it into a voltmeter of range 0 - 10 V, the resistance to be added in series is

Question 5 ARBTS Paper 6 Q5

A charged particle q is shot from a large distance with speed v towards a fixed charged particle Q. It approaches Q upto a closest distance r and then returns. If velocity of q is halved, then the closest distance of approach would be

NEET Physics diagram p6_q05 — Kumar Physics Classes +919955846145

Question 6 ARBTS Paper 6 Q6

Select the correct option.

Question 7 ARBTS Paper 6 Q7

A particle having charge -q and mass m is released from rest on the axis of a fixed ring of total charge Q and radius R from a distance √3 R. Its kinetic energy when it reaches the centre of ring is

NEET Physics diagram p6_q07 — Kumar Physics Classes +919955846145

Question 8 ARBTS Paper 6 Q8

In the network shown points A, B and C have potential of 70 V, zero and 10 V respectively. The ratio of current in the section AD, DB and DC are

NEET Physics diagram p6_q08 — Kumar Physics Classes +919955846145

Question 9 ARBTS Paper 6 Q9

Find the current through 10 Ω resistor shown in figure.

NEET Physics diagram p6_q09 — Kumar Physics Classes +919955846145

Question 10 ARBTS Paper 6 Q10

The reading of voltmeter in the figure shown is

NEET Physics diagram p6_q10 — Kumar Physics Classes +919955846145

Question 11 ARBTS Paper 6 Q11

In a region of space, suppose there exists an electric field E = 40x³ î. The potential difference V_A - V_O, where V_O is the potential at origin and V_A is the potential at x = 2 m, is

Question 12 ARBTS Paper 6 Q12

In the experiment of meter bridge if length corresponding to null deflection is x, what would be its value if the radius of meter bridge wire is doubled?

Question 13 ARBTS Paper 6 Q13

In the potentiometer circuit shown, internal resistance of the 12 V battery is 1 Ω and length of wire AB is 100 cm. When CB is 60 cm, the galvanometer shows no deflection. The emf of cell E is, given resistance of wire AB is 3 Ω.

NEET Physics diagram p6_q13 — Kumar Physics Classes +919955846145

Question 14 ARBTS Paper 6 Q14

A cell of emf E and internal resistance r is connected in series with an external resistance nr. The ratio of terminal potential difference to emf is

Question 15 ARBTS Paper 6 Q15

A total charge of 20 µC is divided into two parts placed at some distance apart. If the charges experience maximum coulombian repulsion, then the charges should be

Question 16 ARBTS Paper 6 Q16

The unit of Poynting vector is

Question 17 ARBTS Paper 6 Q17

If i₁ = 3 sin ωt and i₂ = 4 cos ωt, then i₃ is

NEET Physics diagram p6_q17 — Kumar Physics Classes +919955846145

Question 18 ARBTS Paper 6 Q18

In an LCR circuit the voltage across each of the components L, C and R is 50 V each. Find the voltage across LC combination.

Question 19 ARBTS Paper 6 Q19

Two short identical magnetic dipoles of magnetic moments 1 A m² each are placed at a separation of 2 m with their axes perpendicular to each other. The resultant magnetic field at a point midway between the dipoles is

Question 20 ARBTS Paper 6 Q20

A magnet of magnetic moment 50 î A m² is placed in a magnetic field B = (0.5 î + 3 ĵ) T. The torque acting on the magnet is

Question 21 ARBTS Paper 6 Q21

The inductance of a closely packed coil of 400 turns is 8 mH. When a current of 5 mA is passed through it, the magnetic flux per turn is (μ₀ = permeability of free space)

Question 22 ARBTS Paper 6 Q22

Find the time constant for the given RL circuit.

NEET Physics diagram p6_q22 — Kumar Physics Classes +919955846145

Question 23 ARBTS Paper 6 Q23

A coil having n turns and resistance R is connected with a galvanometer of resistance 4R. The combination is moved in time t such that magnetic flux φ₁ per turn changes to flux φ₂ per turn. The average induced current in the circuit is

Question 24 ARBTS Paper 6 Q24

At a place on earth, horizontal component of earth's magnetic field is B₁ and vertical component is B₂. If a magnetic needle is kept in a vertical plane making angle α with magnetic meridian, then square of time period of vibration needle in this plane is proportional to

Question 25 ARBTS Paper 6 Q25

A long wire carries a steady current. It is bent into a circle of one turn and magnetic field at the centre of coil is B. It is then bent into a circular loop of n-turns. The magnetic field at the centre of coil for same current is

Question 26 ARBTS Paper 6 Q26

A long straight wire along z-axis carries current I in the negative z direction. The magnetic field vector B at point (x, y) in z = 0 plane is

Question 27 ARBTS Paper 6 Q27

The magnetic field due to current carrying circular loop of radius 3 cm at a point on the axis at a distance of 4 cm from centre is 54 µT. The value of magnetic field at centre of loop is

Question 28 ARBTS Paper 6 Q28

The length of the optical path of two media in contact of length d₁ and d₂, of refractive index μ₁ and μ₂ respectively, is

Question 29 ARBTS Paper 6 Q29

A ray of light falls on a transparent sphere with centre at C as shown. The ray emerges from the sphere parallel to line AB. The refractive index of the material of sphere is

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Question 30 ARBTS Paper 6 Q30

Light is incident normally on face AB of a prism as shown. A liquid of refractive index μ is placed on face AC of the prism. The prism is made of glass of refractive index 3/2. The limit of μ for which total internal reflection takes place on face AC is

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Question 31 ARBTS Paper 6 Q31

If the ratio of amplitudes of two waves of same frequency is 4 : 3, then the ratio of maximum and minimum intensities is

Question 32 ARBTS Paper 6 Q32

A thin mica sheet of thickness 2 x 10^-6 m and refractive index 1.5 is introduced in the path of waves from upper slit in YDSE. The wavelength of the wave used is 5000 Å. The central bright maximum will shift

Question 33 ARBTS Paper 6 Q33

A light has amplitude A after passing through the polariser. Angle between analyser and polariser is 60°. Light transmitted by analyser has amplitude

Question 34 ARBTS Paper 6 Q34

If the de-Broglie wavelengths for a proton and alpha-particle are equal, then the ratio of their velocities will be

Question 35 ARBTS Paper 6 Q35

The energy of a photon is E = hν and momentum of photon is P = h/λ, then the velocity of photon will be

Question 36 ARBTS Paper 6 Q36

Which of the following graphs is/are correct for photoelectric effect?

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Question 37 ARBTS Paper 6 Q37

The first line in the Lyman series has wavelength λ. The wavelength of the first line in Balmer series is

Question 38 ARBTS Paper 6 Q38

The activity of a sample of radioactive material is A₁ at time t₁ and A₂ at time t₂ (t₂ > t₁). If its mean life is T, then

Question 39 ARBTS Paper 6 Q39

The depletion layer of silicon diode is 1 µm wide and the knee potential is 0.6 V. Then the electric field in the depletion layer will be

Question 40 ARBTS Paper 6 Q40

Which of the following semiconductor diodes is reverse biased?

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Question 41 ARBTS Paper 6 Q41

The radius of second stationary orbit of electrons in Bohr's atom is R. The radius of the third orbit will be

Question 42 ARBTS Paper 6 Q42

In the following circuit, if D₁ and D₂ are ideal diodes, then the value of I₁ and I₂ are respectively

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Question 43 ARBTS Paper 6 Q43

Name the gate represented by the following circuit.

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Question 44 ARBTS Paper 6 Q44

A radioactive element ²³⁸₉₀X decays into ²²²₈₃Y by α and β^- emissions. The number of β^- particles emitted is

Question 45 ARBTS Paper 6 Q45

The ratio of the wavelength for 2 → 1 transition in Li⁺⁺, He⁺ and H is

Question 46 ARBTS Paper 7 Q1

In an experiment four quantities a, b, c and d are measured with percentage error 2%, 3%, 1% and 0.5% respectively. A quantity Q is defined as Q = a√b/(c^3/2d⁴). Maximum percentage error in calculation of Q will be

Question 47 ARBTS Paper 7 Q2

Who among the following is not a Nobel laureate in physics?

Question 48 ARBTS Paper 7 Q3

Figure shows the acceleration-time graph of a particle moving in a straight line. Which option best represents the corresponding position-time graph?

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NEET Physics diagram p7_q03_options — Kumar Physics Classes +919955846145

Question 49 ARBTS Paper 7 Q4

A particle has initial velocity u = (4î - 5ĵ) m/s and acceleration a = (1/4 î + 1/5 ĵ) m/s². Velocity of the particle at t = 2 second is

Question 50 ARBTS Paper 7 Q5

Three blocks A, B and C are placed on a rough horizontal surface. Friction coefficient between blocks and surface is 0.6. Acceleration of block C in given situation is (g = 10 m/s²)

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Question 51 ARBTS Paper 7 Q6

Three blocks each of mass m are hanged vertically with inextensible strings and an ideal spring. Initially the system was in equilibrium. At any instant lower most string is cut. Acceleration of block B just after cutting the string is

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Question 52 ARBTS Paper 7 Q7

A block P of mass m is moving with velocity v₀ and collides elastically with identical block Q as shown. If spring constant is K, maximum compression in subsequent motion is

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Question 53 ARBTS Paper 7 Q8

Given diagram represents potential energy curve of particle in a field. Particle will be in equilibrium at position

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Question 54 ARBTS Paper 7 Q9

Three thin rods each of mass m and length L are joined to form the shown shape. Moment of inertia about axis xx' passing through rod PQ is

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Question 55 ARBTS Paper 7 Q10

A cylinder of mass m and radius R rolls purely over an inclined surface while moving up on it. Correct statement regarding friction acting on it is

Question 56 ARBTS Paper 7 Q11

Two satellites are in parking orbits around the earth. Mass of one is 10 times that of the other. The ratio of their periods of revolution is

Question 57 ARBTS Paper 7 Q12

Four particles each of mass m move along a circle of radius R under the action of their mutual gravitational attraction. The speed of each particle is

Question 58 ARBTS Paper 7 Q13

When an elastic material with Young's modulus Y is subjected to stretching stress S, elastic energy stored per unit volume is

Question 59 ARBTS Paper 7 Q14

The normal density of gold is ρ₀ and its bulk modulus is B. The increase in density of sphere of gold when pressure P is applied uniformly is (P << B)

Question 60 ARBTS Paper 7 Q15

A large tank filled with water to height h is emptied through a small hole at the bottom. Ratio of time for level to fall from h to h/2 and from h/2 to zero is

Question 61 ARBTS Paper 7 Q16

Specific heat S of a 1 kg container varies with temperature T as S = A + BT, where A = 100 cal kg^-1K^-1 and B = 2 x 10^-2 cal kg^-1K^-2. Heat required from 27°C to 227°C is

Question 62 ARBTS Paper 7 Q17

A spherical body of emissivity e = 0.7 and surface area A is placed inside a perfect black body maintained at temperature T. Energy radiated per second by black body will be

Question 63 ARBTS Paper 7 Q18

An ideal gas expands from volume V to 2V according to law VP² = constant. If initial temperature is T, final temperature will be

Question 64 ARBTS Paper 7 Q19

In a cyclic process ABCA, V-T graph is shown. P-V graph corresponding to the given process can be best depicted by

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Question 65 ARBTS Paper 7 Q20

A refrigerator with coefficient of performance 7 extracts heat from low temperature compartment at 250 J/cycle. Work done per cycle required is nearly

Question 66 ARBTS Paper 7 Q21

The ratio of velocity of sound in oxygen to that in argon at same temperature is

Question 67 ARBTS Paper 7 Q22

The frequency of second overtone of open pipe is equal to first overtone of closed pipe. The ratio of lengths of closed pipe to open pipe is

Question 68 ARBTS Paper 7 Q23

A simple pendulum performs SHM about x = 0 with amplitude A and period T. Speed at x = 3A/4 will be

Question 69 ARBTS Paper 7 Q24

A beam of light converges towards point O, 10 cm behind a concave mirror of focal length 20 cm. Magnification produced by the mirror is

Question 70 ARBTS Paper 7 Q25

A circular beam of light having diameter 4 cm falls on a plane glass slab at angle of incidence 60°. If refractive index of slab is μ = 3/2, diameter of refracted beam is

Question 71 ARBTS Paper 7 Q26

A compound microscope has magnifying power 30. Focal length of eyepiece is 5 cm. If final image is at least distance of distinct vision, magnification produced by objective is

Question 72 ARBTS Paper 7 Q27

In YDSE, if slit separation is halved and distance between slits and screen is doubled, fringe width becomes

Question 73 ARBTS Paper 7 Q28

A beam of light is incident on a glass plate at angle 60°. The reflected ray is completely polarized. Refractive index of glass plate is

Question 74 ARBTS Paper 7 Q29

Two charges each +q are placed at vertices A and B of a right angled isosceles triangle. Charge to be placed at vertex C so that net electrostatic energy is zero is

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Question 75 ARBTS Paper 7 Q30

Two conducting charged spheres having different radii are connected by a conducting wire. Which statement is true?

Question 76 ARBTS Paper 7 Q31

Plate A of a parallel plate air-filled capacitor is connected to a spring of force constant K and plate B is fixed. If +q is given to A and -q to B, extension of spring in equilibrium is

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Question 77 ARBTS Paper 7 Q32

When the key is pressed at t = 0, charge on the capacitor after a very long time in given circuit will be

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Question 78 ARBTS Paper 7 Q33

A thin rectangular magnet suspended freely has period 4 s. If the magnet is broken into two halves, and one piece oscillates in same field, its time period becomes

Question 79 ARBTS Paper 7 Q34

Soft iron is used in many parts of electrical machines because it exhibits

Question 80 ARBTS Paper 7 Q35

The wire loop carries current I as shown. Magnetic field at centre O will be

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Question 81 ARBTS Paper 7 Q36

A charged particle is projected into a region where there may be electric field E and/or magnetic field B. If it goes unaccelerated, then it is not possible that

Question 82 ARBTS Paper 7 Q37

The working of a dynamo is based on the principle of

Question 83 ARBTS Paper 7 Q38

Power factor of the AC circuit shown is

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Question 84 ARBTS Paper 7 Q39

The Maxwell equation ∮B.dl = μ₀(I + ε₀dφ_E/dt) is a statement of

Question 85 ARBTS Paper 7 Q40

The ratio of de-Broglie wavelength of an alpha-particle and a proton of same kinetic energy is

Question 86 ARBTS Paper 7 Q41

If 10% of a material decays in 5 days, then original material left after 20 days is approximately

Question 87 ARBTS Paper 7 Q42

For stability of any nucleus

Question 88 ARBTS Paper 7 Q43

When a P-N junction is forward biased, current across the junction is mainly due to

Question 89 ARBTS Paper 7 Q44

The Boolean equation for the given circuit is

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Question 90 ARBTS Paper 7 Q45

The peak voltage in the output of a half wave diode rectifier fed with a sinusoidal signal without filter is 10 V. The DC component of output voltage is

Question 91 Original NEET Practice Q1

A 2 kg block moves on a smooth horizontal surface with speed 6 m/s. A constant opposing force of 12 N acts on it. Distance travelled before stopping is

Question 92 Original NEET Practice Q2

A capacitor of 6 µF is charged to 10 V and then connected in parallel with an uncharged 3 µF capacitor. Final common potential is

Question 93 Original NEET Practice Q3

A wire of resistance R is stretched to double its length without change in volume. New resistance is

Question 94 Original NEET Practice Q4

A photon of wavelength 400 nm has energy approximately (take hc = 1240 eV nm)

Question 95 Original NEET Practice Q5

In a uniform magnetic field, a charged particle moves in a circle of radius r. If its speed is doubled, radius becomes

Question 96 Original NEET Practice Q6

For a convex lens, object is placed at 2f. The image is formed at

Question 97 Original NEET Practice Q7

If rms value of AC current is 5 A, its peak value is

Question 98 Original NEET Practice Q8

A radioactive sample has half-life 10 days. Fraction remaining after 30 days is

Question 99 Original NEET Practice Q9

The dimensional formula of Planck's constant is

Question 100 Original NEET Practice Q10

A transformer has primary turns 500 and secondary turns 2500. If primary voltage is 220 V, secondary voltage for an ideal transformer is

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