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

A non-inertial frame of reference is that frame of reference in which

Question # 2

Slope of velocity time graph represents:

Question # 3

The motion of a body in a straight line is the motion in

Question # 4

The product of force and time is called change in:

Question # 5

Root out of the conventional source of energy:

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

Essential characteristic of equilibrium is

Question # 8

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

Question # 9

The collision in which KE is conserved but momentum is not conserved is called:

Question # 10

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 # 11

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 # 12

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

Question # 13

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 # 14

Inertia mass and gravitational mass are

Question # 15

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

Question # 16

The direction of velocity is along the direction of

Question # 17

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

Question # 18

The linear momentum of the body is defined as

Question # 19

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

Question # 20

The dimension of linear inertia is:

Question # 21

The decrease in velocity per unit time is called:

Question # 22

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 # 23

The SI units of momentum is

Question # 24

The direction of the linear momentum is the direction of

Question # 25

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

Question # 26

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 # 27

If the acceleration of a body is negative, then slope of the velocity-time graph will be:

Question # 28

Bodies failing freely under gravity provide good example of motion under

Question # 29

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 # 30

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The collision in which KE is conserved but momentum is not conserved is called:
A. Elastic collision
B. Inelastic collision
C. any these
D. None of these
2 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
3 A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is
A. 37.5 km/h
B. 10 km/h
C. 42 km/h
D. 40 km/h
4 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
5 The horizontal range of projectile, at a certain place, depends upon
A. the mass of the projectile
B. velocity of projection
C. angle of projection
D. angle as well as velocity of projection
6 A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:
A. 0.5 m/sec2
B. 5 m/sec2
C. 1.5 m/sec2
D. 9.8 m/sec2
7 A train cover 90 km in half an hour. the time taken by it to travel 15 km will be:
A. 20 minutes
B. 48 minutes
C. 10 minutes
D. 5 minutes
8 Swimming is based on the principle of
A. Newton's 1st law
B. Newton's 2nd law
C. Newton's 3rd law
D. All
9 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
A. 6 s
B. 36 s
C. 38 s
D. None of these
10 A the top of the trajectory of a projectile, the directions of its velocity and acceleration are
A. Perpendicular to each other
B. Parallel to each other
C. Inclined to each other at an angle of 45°
D. Anitparallel to each other

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