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

One KWh is equal to:

Question # 2

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?

Question # 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

Question # 4

One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:

Question # 5

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

Question # 6

If the values of instantaneous and average velocities are equal, the body is said to be moving with

Question # 7

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 8

The time rate of change of displacement is called:

Question # 9

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

Question # 10

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

Question # 11

Which one of the following is dimensionless.

Question # 12

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

Question # 13

Graphs which are used to illustrate the variation of velocity of an object with time are called

Question # 14

The linear momentum of the body is defined as

Question # 15

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

Question # 16

Acceleration in a body is always produced in the directin of:

Question # 17

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

Question # 18


Swimming becomes possible because of______law of motion:

Question # 19

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 # 20

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

Question # 21

Force is a:

Question # 22

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?

Question # 23

The velocity of a body at any instant of its motion is known as

Question # 24

Velocity is a

Question # 25

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

Question # 26

The quantity F x t is called as

Question # 27

Acceleration produced in a body by the force varies

Question # 28

The dimension of linear inertia is:

Question # 29

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

Question # 30

Flight of rocket in the space is an example of

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 One KWh is equal to:
A. 3.6 x 102J
B. 3.6 KJ
C. 3.6 x 101KJ
D. 3.6 MJ
2 Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is
A. 22 m
B. 6 m
C. 33 m
D. 7.8 m
3 The consumption of energy by a 1000 watt heter in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
4 A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is
A. Zero
B. Infinity
C. V
D. 2 V
5 Velocity is a
A. scalar quantity
B. vector quantity
C. constant quantity
D. none of them
6 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:
A. 0.5 m/sec2
B. 5 m/sec2
C. 1.5 m/sec2
D. 9.8 m/sec2
7 The direction of the linear momentum is the direction of
A. speed
B. velocity
C. weight
D. none of them
8 Inertia mass and gravitational mass are
A. opposite
B. identical
C. identical when there is no friction
D. all of them
9 When a horse pulls a cart, the force that makes the horse run forward is the force exerted by
A. The horse on the ground
B. The horse on the cart
C. The ground on the horse
D. The ground on the cart
10 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them

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