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

When a shell explodes in mid-air, its fragments fly off in

Question # 2

The quantity F x t is called as

Question # 3

During the projectile motion, the horizontal component of velocity

Question # 4

The three equation of motions are useful only for

Question # 5

Work done along a closed path in a gravitational force is:

Question # 6

A projectile on its path gets divided into two pieces at its highest point. Which is true?

Question # 7

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Question # 8

Swimming becomes possible because of______law of motion.

Question # 9

Acceleration produced in a body by the force varies

Question # 10

Acceleration produced in a body by a force varies

Question # 11

Earth is considered to be

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

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

Question # 14

If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)

Question # 15

If the velocity time graph is a straight line parallel to the time-axis, then it means:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is
A. Moving forward and gaining speed
B. Moving forward and losing speed
C. Moving forward with uniform speed
D. Moving backward with uniform speed
2 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
3 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
A. 3,600 N
B. 7,200 N
C. 10,000 N
D. 100,000 N
4 Unit of impulse in
A. Newton
B. Kg m
C. Kg m/s
D. Joule
5 What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?
A. 4 : 5
B. 7 : 9
C. 16 : 25
D. 1 : 1
6 The motion in a plane is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
7 For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to
A. Four times
B. Thrice
C. Once
D. Twice
8 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°
9 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
10 The time rate of change of displacement is called:
A. Time
B. Acceleration
C. Speed
D. Velocity

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