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

Flight of rocket in the space is an example of

Question # 2

Change in momentum is one second called.

Question # 3

The projectile attains maximum horizontal range when it is projected at an angle of

Question # 4

A body moving with uniform velocity has

Question # 5

For maximum linear distance of travel, a projectile must be fired at an angle of

Question # 6

An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow

Question # 7

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

Question # 8

A body of mass 5 kg is acted upon by a total change n momentum will be:

Question # 9

Swimming is based on the principle of

Question # 10

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 11

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

Question # 12

A ball is dropped vertically down and it takes time t to reach the ground. At time t/2

Question # 13

Earth is considered to be

Question # 14

The projectile motion is composed of

Question # 15

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

Question # 16

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 # 17

The motion in a plane is the motion in

Question # 18

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

Question # 19

A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Question # 20

A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be

Question # 21

When we consider the average velocity of a body, then the body is moving in

Question # 22

The slopes of the tangent at any point on the curve gives the value of the

Question # 23

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 # 24

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

Question # 25

Acceleration of a body is positive, if the velocity of the body is

Question # 26

A body whose momentum is constant must have constant

Question # 27

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

Question # 28

The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is

Question # 29

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of

Question # 30

Unit of impulse in

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A ball is dropped downwards After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds
A. 25 m
B. 20 m
C. 50 m
D. 9.8 m
2 A body of mass 1.0 kg is falling with an acceleration of 10 m/s2. Its apparent weight will be (g=10 m/s2)
A. 1.0 kg wt
B. 2.0 kg wt
C. 0.5 kg wt
D. Zero
3 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
4
Swimming becomes possible because of______law of motion:
A. First
B. Second
C. Third
D. None of these
5 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
6 A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when
A. Elevator is stationary
B. Elevator cable breaks and it falls freely towards earth
C. Elevator accelerates downwards
D. Elevator accelerates upward
7 Distance covered by a freely falling body in 2 sec will be
A. 4.9 m
B. 19.6 m
C. 29.2 m
D. 44.1 m
8 A change in position of a body from its initial position to its final position is known as
A. relative motion
B. displacement
C. distance
D. acceleration
9 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
10 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity

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