NEET PREPARATION NOTES WITH IMPORTANT QUESTIONS

NEET PREPARATION NOTES WITH
IMPORTANT QUESTIONS & ANSWERS
PHYSICS
Important Definitions
1. Velocity

Definition: Rate of change of displacement with respect to time.

2. Acceleration

Definition: Rate of change of velocity with respect to time.

3. Momentum

Definition: Product of mass and velocity.

Formula: p = mv

4. Work

Definition: Product of force and displacement in the direction of force.

Formula: W = Fs cosθ

5. Power

Definition: Rate of doing work.

Formula: P = W/t

6. Electric Current

Definition: Rate of flow of electric charge.

Formula: I = Q/t

, Important Physics Questions and Answers
Q1. State Newton's First Law of Motion.
Answer:

A body remains at rest or continues to move with uniform velocity in a straight line unless acted
upon by an external force.




Q2. State Newton's Second Law of Motion.
Answer:

The rate of change of momentum of a body is directly proportional to the applied force.

Formula:
F = ma




Q3. State Newton's Third Law of Motion.
Answer:

For every action, there is an equal and opposite reaction.




Q4. What is Kinetic Energy?
Answer:

The energy possessed by a body due to its motion is called kinetic energy.

Formula:
KE = ½mv²




Q5. What is Potential Energy?