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

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

Question # 2

The artillery shells travel along parabolic paths under the influence of

Question # 3

Blomass includes:

Question # 4

The distance covered by a body in unit time is called.

Question # 5

Flight of rocket in the space is an example of

Question # 6

The velocity given to a body to go out of the influence of earth's gravity is known as:

Question # 7

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Question # 8

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

Question # 9

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?

Question # 10

A body whose momentum is constant must have constant

Question # 11

A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

Question # 12

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

Question # 13

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

Question # 14

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

Question # 15

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?

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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 When the surfaces are coated with a lubricant, then they
A. Stick to each other
B. Slide upon each other
C. Roll upon each other
D. None of these
3 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
4 The time rate of change of displacement is called:
A. Time
B. Acceleration
C. Speed
D. Velocity
5 A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?
A. 0.1 m/s
B. 10 m/s
C. 1 m/s
D. 0.01 m/s
6 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
7 Dimensions of velocity are
A. [L]
B. [T]
C. [LT-1]
D. [LT-2]
8 For a moving body, at any instant of time
A. If the body is not moving the acceleration is necessarily zero
B. If the body is slowing, the retardation is negative
C. If the body is slowing, the distance is negative
D. If displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future
9 Acceleration of a body is negative if the velocity of the body is
A. constant
B. increasing
C. decreasing
D. none of them
10 The area under line velocity-time graph is numerically equal to the
A. speed of the body
B. acceleration of the body
C. distance covered by the body
D. none of them

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