ECAT Pre General Science Physics Chapter 3 MCQ Test With Answer

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

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ECAT Pre General Science Physics Chapter 3 Motion and Force

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Question # 1

The horizontal range of projectile, at a certain place, depends upon

Question # 2

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

Question # 3

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?

Question # 4

In equation F=ma, then mass 'm' is

Question # 5

Acceleration produced in a body by a force varies

Question # 6

A train of 150 m length is going towards north direction at a speed of 10 ms-1. A parrot files at a speed of 5 ms-1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

Question # 7

A stone is dropped from rest from the top of a tower 19.6 m high. The distance traveled during the last second of its fall is (giving g=9.8 m/ss)

Question # 8

Laws of motion are not valid in a system which is

Question # 9

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

Question # 10

The direction of velocity is along the direction of

Question # 11

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 12

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

Question # 13

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

Question # 14

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

Question # 15

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

Question # 16

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 17

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 18

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

Question # 19

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Question # 20

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

Question # 21

Flight of rocket in the space is an example of

Question # 22

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 # 23

A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is

Question # 24

If two bodies of equal masses moving in the same direction collide elastically, then their velocities.

Question # 25

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

Question # 26

A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

Question # 27

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

Question # 28

A cold soft drink is kept on the balance. When the cap is opened, then the weight

Question # 29

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

Question # 30

When a person jumps off the ground, the reaction force of the ground is

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The product of force and time is called change in:
A. Momentum
B. Impulse
C. Force
D. Both a and b
2 The vertical component of velocity of a projectile during its motion is minimum
A. at the time of projection
B. at the highest point
C. just before hitting the plane of projection
D. all of them
3 A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is
A. m
B. 2 m
C. 4 m
D. Infinity
4 Distance covered by a freely failing body n the first second of its motion will be:
A. 4.9 m
B. 9.8 m
C. 19.6 m
D. 29.4 m
5 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity
6 The time rate of change of displacement is called:
A. Time
B. Acceleration
C. Speed
D. Velocity
7 The three equation of motions are useful only for
A. linear motion with increasing acceleration
B. line motion with uniform acceleration
C. linear motion with zero acceleration
D. linear motion with varying acceleration
8 Acceleration produced in a body by the force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them
9 A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?
A. 60 km/hr
B. 80 km/hr
C. 120 km/hr
D. 180 km/hr
10 Newton published laws of motion in his famous book "principia" in
A. 1867
B. 1667
C. 1676
D. 1687

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