ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

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

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

A 5 kg mass is falling freely, the force acting on, it will be

Question # 2

Acceleration produced in a body by the force varies

Question # 3

A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is

Question # 4

A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is

Question # 5

If the acceleration of a body is not uniform, then velocity-time graph will be:

Question # 6

When a shall explodes a mid-air, the total momentum of its fragments is

Question # 7

The magnitude of the displacement is a line from initial position to final position which is

Question # 8

The slopes of the tangent at any point on the curve gives the value of the

Question # 9

When a bicycle is in motion, the frictional forces exerted by the ground are

Question # 10

The vertical component of velocity of a projectile during its motion is minimum

Question # 11

The mass of a body measured by a physical balance in a lift at rest is found to be m, if the lift is going up with an acceleration a, its mass will be measured as

Question # 12

A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?

Question # 13

Root out of the conventional source of energy:

Question # 14

Newton's laws are adequate for speeds that are

Question # 15

A body of mass 5 kg is acted upon by a total change n momentum will be:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be
A. Unequal
B. Exactly equal
C. Roughly equal
D. Zero
2 If two bodies of equal masses moving in the same direction collide elastically, then their velocities.
A. Are added
B. Are subtracted
C. Do not change
D. Are exchanged
3 When a person jumps off the ground, the reaction force of the ground is
A. greater than the weight of the person
B. smaller than the weight of the person
C. equal to the weight of the person
D. zero
4 A boat of mass 40 kg is at rest, A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. What is the velocity of boat?
A. 4 m/s
B. 2 m/s
C. 8 m/s
D. 1 m/s
5 The projectile motion is composed of
A. horizontal motion only
B. vertical motion only
C. horizontal and vertical motion
D. none of them
6 A body of mass 1.0 kg is falling with an acceleration of 10 m/s2. Its apparent weight will be (g=10 m/s2)
A. 1.0 kg wt
B. 2.0 kg wt
C. 0.5 kg wt
D. Zero
7 When brakes are applied to a fast moving car, the passenger will be thrown:
A. Forward
B. Backward
C. Downward
D. none of these
8 A non-inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0 or a < 0
C. v = 0
D. none of them
9 A rocket carries its own fuel in the form of
A. liquid only
B. liquid or solid
C. liquid and solid
D. liquid or solid and oxygen
10 Root out the conventional source of energy:
A. Energy from blomass
B. hydroelectric energy
C. Geothermal energy
D. None of these

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