Physics Tutor in Sector 117 Noida by Kumar Physics Classes with Bernoulli theorem derivation and applications

Physics Tutor in Sector 117 Noida | Kumar Physics Classes

+91-9958461445

If you live in Sector 117 Noida and your child is facing difficulty in Physics, then this blog is for you. Sector 117 Noida is well connected and also close to Delhi and other important areas of NCR. Many students travel to Delhi for coaching, tuition or school-related academic support. But the biggest problem is time loss.

When a student spends too much time travelling to and from Delhi, the actual study time reduces. The child becomes tired, revision suffers, homework remains incomplete, and Physics starts becoming more difficult day by day.

Physics is not a subject that can be understood by random shortcuts. It needs proper concept clarity, proper derivation, proper numerical practice, and proper textbook-based learning. Many students study from random videos, weak notes, incomplete explanations, and inexperienced tutors. After six months, parents realise that marks are still not improving.

At Kumar Physics Classes, Kumar Sir teaches Physics with more than 30 years of teaching experience. Students are trained with proper concept clarity, H.C. Verma-based thinking, numerical practice, board-level preparation, NEET-level questions, and JEE-level problem-solving approach.

Website: Kumar Physics Classes
Contact: +91-9958461445
Email: kumarsirphysics@gmail.com

Why Students in Sector 117 Noida Need a Good Physics Tutor

Many students in Noida study in good schools, but still they struggle in Physics. The reason is not always lack of intelligence. The real reason is lack of proper guidance.

A student may be studying in DPS, Amity, Somerville, Mayoor, Lotus Valley, Shiv Nadar, Step by Step, or any other reputed school, but if Physics concepts are not clear, marks will not improve.

Common problems faced by students:

They read theory but cannot solve numericals.
They memorise formulas but do not understand derivations.
They do not know how to apply concepts.
They are afraid of H.C. Verma and advanced-level questions.
They waste time watching random videos.
They do not revise properly.
They do not understand vectors, graphs, units and dimensions.
They make silly mistakes in signs and calculations.

Kumar Sir focuses on the root cause of the problem. He teaches Physics from basic level to advanced level so that students can understand the subject properly.

Why Kumar Physics Classes?

Kumar Physics Classes is suitable for students preparing for:

CBSE Physics
ICSE Physics
ISC Physics
NEET Physics
IIT JEE Physics
JEE Main Physics
JEE Advanced Physics
AP Physics
IB Physics
IGCSE Physics
A-Level Physics
British Curriculum Physics
Edexcel Physics

Kumar Sir explains every topic in a structured way. He focuses on concept clarity, derivation, numerical practice and exam-oriented preparation.

Physics becomes easy when the student understands:

What the formula means
Why the formula is derived
Where the formula is applied
What mistakes should be avoided
How to solve questions step by step

Bernoulli’s Theorem

Bernoulli’s theorem is one of the most important concepts in fluid mechanics. It is based on conservation of energy for a flowing liquid.

According to Bernoulli’s theorem:

For an ideal liquid flowing steadily through a pipe, the sum of pressure energy, kinetic energy and potential energy per unit volume remains constant.

Copy-paste friendly formula:

P + 1/2 rho v^2 + rho g h = constant

Where:

P = pressure
rho = density of liquid
v = speed of liquid
g = acceleration due to gravity
h = height

Meaning of Bernoulli’s Theorem

Bernoulli’s theorem tells us that when the speed of a fluid increases, its pressure decreases. When the speed decreases, pressure increases.

This is why fast-moving air or liquid creates low pressure.

Simple idea:

High speed means low pressure.
Low speed means high pressure.

Applications of Bernoulli’s Theorem

1. Venturimeter

A venturimeter is used to measure the rate of flow of liquid through a pipe.

In the narrow part of the tube, velocity increases and pressure decreases. This pressure difference helps in calculating the flow rate.

Important concept:

At narrow section:

velocity is high
pressure is low

At wider section:

velocity is low
pressure is high

2. Atomizer or Spray Pump

A spray pump works on Bernoulli’s principle.

When air is blown at high speed over the mouth of a tube dipped in liquid, pressure near the mouth becomes low. Due to higher atmospheric pressure on the liquid surface, liquid rises in the tube and comes out as fine spray.

This principle is used in:

Perfume spray
Paint spray
Insecticide spray
Medical atomizers

3. Jet Pump

A jet pump also works on Bernoulli’s theorem.

A high-speed jet of water or air creates low pressure near the opening. Due to this pressure difference, another fluid is sucked in and carried along with the jet.

This is used where suction is required.

4. Lift on an Aeroplane Wing

The shape of an aeroplane wing is such that air moves faster over the upper surface than the lower surface.

Above the wing:

air speed is high
pressure is low

Below the wing:

air speed is low
pressure is high

This pressure difference produces upward lift.

5. Blowing Roofs During Storms

During a storm, air moves very fast over the roof of a house. Due to high speed, pressure above the roof becomes low. Pressure inside the house remains comparatively high. This pressure difference can lift the roof upward.

6. Two Boats Moving Close to Each Other

When two boats move close and parallel to each other, water between them moves faster. Due to higher speed, pressure between the boats decreases. The pressure outside becomes higher and pushes the boats toward each other.

7. Bunsen Burner

In a Bunsen burner, gas comes out at high speed and creates low pressure near the air holes. Due to this low pressure, air is sucked in and mixes with the gas.

8. Carburetor

In older petrol engines, carburetors use Bernoulli’s principle. Fast-moving air creates low pressure and petrol is sucked into the air stream.

9. Filter Pump

A filter pump works by producing low pressure using a fast-moving stream of water. This low pressure helps in suction.

10. Dynamic Lift in Fluids

Any object moving through a fluid can experience lift if fluid speed is different on two sides. This is an important application of Bernoulli’s theorem.

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School Wise Physics Tutor Links in Noida

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Final Note

If you are searching for Physics Tutor in Sector 117 Noida, Kumar Physics Classes can help you save travel time and build strong Physics concepts from home or online. Instead of wasting time travelling to Delhi or watching random videos, students can learn Physics in a structured and exam-oriented way.

Physics becomes easy when the teacher explains the logic behind every formula.

Website: Kumar Physics Classes
Contact: +91-9958461445
Email: kumarsirphysics@gmail.com

20 Conceptual Questions on Bernoulli’s Theorem with Answers

1. What does Bernoulli’s theorem state?

Answer:
Bernoulli’s theorem states that for an ideal fluid in steady flow, the sum of pressure energy, kinetic energy and potential energy per unit volume remains constant.

Formula:

P + 1/2 rho v^2 + rho g h = constant

2. What type of fluid is assumed in Bernoulli’s theorem?

Answer:
Bernoulli’s theorem assumes an ideal fluid. It means the fluid is incompressible and non-viscous.

3. What is the main idea behind Bernoulli’s theorem?

Answer:
The main idea is conservation of mechanical energy in fluid flow.

4. What happens to pressure when fluid speed increases?

Answer:
When fluid speed increases, pressure decreases.

5. What happens to pressure when fluid speed decreases?

Answer:
When fluid speed decreases, pressure increases.

6. Why is pressure low at the narrow part of a pipe?

Answer:
At the narrow part, fluid speed increases. According to Bernoulli’s theorem, higher speed means lower pressure.

7. Why does a spray pump work?

Answer:
In a spray pump, fast-moving air creates low pressure near the tube opening. Due to higher atmospheric pressure on the liquid surface, liquid rises and comes out as spray.

8. How does an aeroplane wing get lift?

Answer:
Air moves faster over the upper surface of the wing and slower below it. Pressure above the wing becomes lower than pressure below the wing. This pressure difference produces lift.

9. Why can roofs be blown off during storms?

Answer:
During storms, air moves very fast above the roof. Pressure above the roof decreases, while pressure inside remains higher. This pressure difference can lift the roof.

10. Why do two boats moving close together attract each other?

Answer:
Water between the boats moves faster, so pressure between them decreases. Higher pressure outside pushes the boats toward each other.

11. What is a venturimeter used for?

Answer:
A venturimeter is used to measure the rate of flow of liquid through a pipe.

12. Why is velocity high in the narrow part of a venturimeter?

Answer:
Because the area is smaller. According to the equation of continuity, when area decreases, velocity increases.

A v = constant

13. Why is pressure difference produced in a venturimeter?

Answer:
Pressure difference is produced because fluid speed is different at the wider and narrower parts.

14. What is the role of height in Bernoulli’s theorem?

Answer:
Height contributes to potential energy term rho g h. If height changes, pressure and velocity may also change to conserve total energy.

15. Can Bernoulli’s theorem be applied to viscous fluids exactly?

Answer:
No. Bernoulli’s theorem is exact only for non-viscous fluids. For viscous fluids, energy loss due to friction must be considered.

16. Why does a fast-moving train pull nearby objects toward it?

Answer:
Air between the train and nearby object moves fast, creating low pressure. Higher pressure on the other side pushes the object toward the train.

17. What is the pressure energy per unit volume in Bernoulli’s equation?

Answer:
Pressure energy per unit volume is P.

18. What is the kinetic energy per unit volume in Bernoulli’s equation?

Answer:
Kinetic energy per unit volume is:

1/2 rho v^2

19. What is the potential energy per unit volume in Bernoulli’s equation?

Answer:
Potential energy per unit volume is:

rho g h

20. Why is Bernoulli’s theorem important in Physics?

Answer:
Bernoulli’s theorem explains many real-life phenomena like aeroplane lift, spray pump, venturimeter, jet pump, storm effects and fluid flow in pipes.