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

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

Question # 2

Velocity is a

Question # 3

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 # 4

A 5 kg mass is falling freely, the force acting on, it will be

Question # 5

The dimension of linear inertia is:

Question # 6

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

Question # 7

Bodies which falls freely under gravity provides good example of motion under:

Question # 8

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

Question # 9

Unit of impulse in

Question # 10

A train of 150 m length is going towards north direction at a speed of 10 ms-1. A parrot files at a speed of 5 ms-1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

Question # 11

Suppose the water flows out from a pipe at 3kg s-1and its velocity changes from 5m s-1to zero on striking the wall, then the force exerted by water on wall will be

Question # 12

In equation F=ma, then mass 'm' is

Question # 13

For a moving body, at any instant of time

Question # 14

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:

Question # 15

Essential characteristic of equilibrium is

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have
A. uniform deceleration
B. uniform negative acceleration
C. average acceleration
D. uniform positive acceleration
2 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec
3 Root out the conventional source of energy:
A. Energy from blomass
B. hydroelectric energy
C. Geothermal energy
D. None of these
4 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
5 If the velocity time graph is a straight line parallel to time-axis, then it means that:
A. The body is moving with uniform velocity
B. The body is moving with uniform acceleration
C. The body is at rest
D. None of above
6 When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.
A. Becomes half
B. Becomes zero
C. Ramains same
D. Becomes double
7 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?
A. 60 km/hr
B. 80 km/hr
C. 120 km/hr
D. 180 km/hr
8 Change in momentum is one second called.
A. Impulse
B. Force
C. Energy
D. Work
9 A train of 150 m length is going towards north direction at a speed of 10 ms-1. A parrot files at a speed of 5 ms-1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to
A. 12 s
B. 8 s
C. 15 s
D. 10 s
10 In the above figures, tell which set is graphs shows that a body is moving uniform velocity:
A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iii)
D. (ii) and (iv)

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