ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

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

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ECAT Physics Chapter 3 Motion and Force

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Question # 1

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

Question # 2

Which one of the following is dimensionless.

Question # 3

An airplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above a point A on the ground, a bomb is released from it. The bomb strikes the ground, at point B. The distance AB is

Question # 4

When body moves with increasing acceleration, its velocity time graph is a

Question # 5

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 # 6

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

Question # 7

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

Question # 8

Blomass includes:

Question # 9

The time of flight of a projectile motion equal to

Question # 10

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

Question # 11

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

Question # 12

One KWh is equal to:

Question # 13

Distance covered by a freely failing body n the first second of its motion will be:

Question # 14

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

Question # 15

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

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ECAT Class Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If the values of instantaneous and average velocities are equal, the body is said to be moving with
A. uniform acceleration
B. uniform speed
C. variable velocity
D. uniform velocity
2 When a person jumps off the ground, the reaction force of the ground is
A. greater than the weight of the person
B. smaller than the weight of the person
C. equal to the weight of the person
D. zero
3 A 5 kg mass is falling freely, the force acting on, it will be
A. 19.6 N
B. 9.8 N
C. 5 N
D. Zero
4 The effect of applying a force on a moving body is to change
A. its direction of motion only
B. its speed of motion only
C. both the direction and speed of motion
D. its inertia only
5 One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:
A. 2 Kg
B. 3 Kg
C. 4 Kg
D. 8 Kg
6 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
7 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
8 Which of the following four statements is false?
A. A body can have zero velocity and still be accelerated
B. A body can have a constant velocity and still have a varying speed
C. A body can have a constant speed and still have a varying velocity
D. The direction of the velocity of a body can change when its acceleration is constant
9 In equation F=ma, then mass 'm' is
A. rest mass
B. variable mass
C. inertial mass
D. gravitational mass
10 A body of weight 1 N has a kinetic energy of 1 joule when its speed is:
A. 1.46 m sec-1
B. 2.44 m sec-1
C. 3.42 m sec-1
D. 4.43 m sec-1

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