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

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

Question # 2

Earth is considered to be

Question # 3

A train cover 90 km in half an hour. the time taken by it to travel 15 km will be:

Question # 4

Slope of velocity time graph represents:

Question # 5

Unit of impulse in

Question # 6

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 # 7

A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:

Question # 8

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

Question # 9

Rocket engines lift a rocket from the earth surface, because hot gas with high velocity

Question # 10

During the upward motion of the projectile, the vertical component of velocity:

Question # 11

Change in momentum is one second is called:

Question # 12

Distance covered by a freely falling body in 2 sec will be

Question # 13

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

Question # 14

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

Question # 15

A change in position of a body from its initial position to its final position is known as

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Which quantity has the same units as impulse
A. force
B. work
C. linear momentum
D. acceleration
2 When brakes are applied to a fast moving car, the passengers will be thrown:
A. Forward
B. Backward
C. Downward
D. None of these
3 Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2
A. 0.064 m
B. 640 cm
C. 64 cm
D. 64 m
4 Suppose the water flows out from a pipe at 3kg s-1and its velocity changes from 5m s-1to zero on striking the wall, then the force exerted by water on wall will be
A. 5 N
B. 10 N
C. 15 N
D. 20 N
5 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
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
6 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
7 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
8
Swimming becomes possible because of______law of motion:
A. First
B. Second
C. Third
D. None of these
9 Velocity of a body changes if
A. direction of the body changes
B. speed of the body changes
C. neither speed nor direction changes
D. either speed or direction changes
10 Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is
A. 45°
B. 60°
C. 50°
D. 40°

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