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Magnetism and Matter NEET MCQs
Practice topic-wise NEET Physics questions with instant answers and detailed solution snapshots.
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Magnetism and Matter Formula Sheet
Read these formulas first, then attempt the MCQs below.
Magnetic dipole momentM = m x 2l; for a current loop, M = NIA
Pole strengthm = M / magnetic length
Torque on dipoleτ = MB sin θ
Potential energyU = -MB cos θ
Work in rotationW = MB(cos θ1 - cos θ2)
Axial fieldBaxial = (μ0/4π) x 2M / r3
Equatorial fieldBeq = (μ0/4π) x M / r3
Magnet in fieldStable: θ = 0; unstable: θ = 180°
Oscillation periodT = 2π sqrt(I / MBH)
Vibration magnetometerT2 ∝ 1 / BH
Earth field componentsBH = B cos δ, BV = B sin δ
Angle of diptan δ = BV / BH
Apparent diptan δ' = tan δ / cos α
Two perpendicular dipscot2δ = cot2δ1 + cot2δ2
Magnetisation relationB = μ0(H + I)
Susceptibilityχm = I/H = B/(μ0H) - 1
Relative permeabilityμr = 1 + χm
Curie lawχm ∝ 1/T for paramagnetic substances
Solenoid fieldB = μ0 nI; magnetic moment = NIA
Bohr magnetonμB = eh / 4πme
Tangent galvanometerB = BH tan θ
Hysteresis lossEnergy loss per unit volume per cycle = area of B-H loop
Diamagnetic materialχm is small and negative; repelled by magnetic field
Paramagnetic materialχm is small and positive; weakly attracted
Ferromagnetic materialLarge χm; domains align; above Curie temperature it becomes paramagnetic
Section A - Easy Questions: 35
Section B - Moderate Questions: 25
Section C - Previous Years NEET Questions: 34
Section D - Assertion - Reason Type Questions: 26
Section A - Easy Questions
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Section B - Moderate Questions
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Section C - Previous Years NEET Questions
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Section D - Assertion - Reason Type Questions
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