ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 3 Motion and Force

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ECAT Physics Chapter 3 Motion and Force

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Question # 1

Change in momentum is one second called.

Question # 2

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

Question # 3

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2

Question # 4

A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be:

Question # 5

When two protons are brought closer potential energy of both of them:

Question # 6

What must be changing when a body is accelerating uniformly?

Question # 7

A body whose momentum is constant must have constant

Question # 8

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

Question # 9

Linear momentum is a

Question # 10

Which of the following is not a projectile

Question # 11

If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)

Question # 12

A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is

Question # 13

The decrease in velocity per unit time is called:

Question # 14

Which one of the following is dimensionless.

Question # 15

The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Acceleration in a body is always produced in the direction of :
A. Velocity
B. Weight
C. Force
D. Both B and C
2 Acceleration of a body at any particular instant during its motion is known as
A. average acceleration
B. uniform acceleration
C. instantaneous acceleration
D. all of them
3 Body which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
4 Slope of velocity time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
5 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
6 The decrease in velocity per unit time is called:
A. Variable Acceleration
B. Average Acceleration
C. Retardation
D. None of these
7 The quantity F x t is called as
A. momentum
B. velocity
C. acceleration
D. impulse
8 The motion of a body in a straight line is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
9 Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?
A. Their range will be same
B. Their maximum height will be same
C. Their landing velocity will be same
D. Their time of flight will be same
10 If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have
A. different values
B. same values
C. zero valves
D. constant valves

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