ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

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

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

Flight of rocket in the space is an example of

Question # 2

The path described by a projectile is called its

Question # 3

The velocity of a projectile is maximum

Question # 4

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

Question # 5

If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is

Question # 6

Force is a:

Question # 7

An inertial frame of reference is that frame of reference in which

Question # 8

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

Question # 9

When two protons are brought closer potential energy of both of them:

Question # 10

A typical rocket consumes about

Question # 11

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

Question # 12

A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

Question # 13

The discuss used by athlete has a mass of 1 kg, its weight in newton is

Question # 14

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

Question # 15

The projectile motion is composed of

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A body of mass 5 kg is acted upon by a total change n momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
2 When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts
A. In the backward direction on the front wheel and in the forward direction on the rear wheel
B. In the forwards directions on the front wheel and in the backward direction on the rear wheel
C. In the forward direction on both the wheels
D. In the backward direction on both the wheels
3 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
A. 2100 m/s2
B. 1400 m/s2
C. 700 m/s2
D. 400 m/s2
4 One KWh is equal to:
A. 3.6 x 102J
B. 3.6 KJ
C. 3.6 x 101KJ
D. 3.6 MJ
5 If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have
A. different values
B. same values
C. zero valves
D. constant valves
6 The second law gives the relationship between
A. mass and velocity
B. force and acceleration
C. velocity and acceleration
D. mass and weight
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 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
9 Graphs which are used to illustrate the variation of velocity of an object with time are called
A. distance time graphs
B. speed time graphs
C. velocity time graphs
D. acceleration time graphs
10 Blomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these

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