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

The linear momentum of the body is defined as

Question # 2

A typical rocket ejects the burnt gases at speeds over

Question # 3

One KWh is equal to:

Question # 4

When a force is applied on a body, several effects are possible Which of the following effect could not occur?

Question # 5

Graphs which are used to illustrate the variation of velocity of an object with time are called

Question # 6

A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

Question # 7

Newton published laws of motion in his famous book "principia" in

Question # 8

The product of force and time is called

Question # 9

The product of force and time is called change in:

Question # 10

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

Question # 11

The vertical and horizontal range will be equal id angle of projection is

Question # 12

If the objects of different masses move with the same velocity, then it is more difficult to stop the

Question # 13

When brakes are applied to a fast moving car, the passengers will be thrown:

Question # 14

The direction of velocity is along the direction of

Question # 15

When body moves with increasing acceleration, its velocity time graph is a

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity
2 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec
3 If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)
A. mg
B. m (g+a)
C. m (g - a)
D. 0
4 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
5 One KWh is equal to:
A. 3.6 x 102J
B. 3.6 KJ
C. 3.6 x 101KJ
D. 3.6 MJ
6 When a shall explodes a mid-air, the total momentum of its fragments is
A. less than the momentum of shell
B. equal to the momentum of shell
C. greater than the momentum of shell
D. none of them
7 Change in momentum is one second is called:
A. Impulse
B. Force
C. Energy
D. Work
8 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
9 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
10 A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is
A. 120 x 10.8 N
B. 180 N
C. 720 N
D. 360 N

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