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

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 # 2

The linear momentum of the body is defined as

Question # 3

Laws of motion are not valid in a system which is

Question # 4

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 # 5

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

Question # 6

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

Question # 7

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

Question # 8

The displacement coincides with the path of the motion when a body moves is a

Question # 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

Question # 10

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

Question # 11

A mass of 5kg moves with an acceleration of 10m s-2force applied is

Question # 12

When we consider the average velocity of a body, then the body is moving in

Question # 13

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

Question # 14

The path (or trajectory) described by a projectile is

Question # 15

For maximum linear distance of travel, a projectile must be fired at an angle of

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The product of force and time is called
A. acceleration
B. linear momentum
C. angular momentum
D. impulse
2 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
A. Moving forward and gaining speed
B. Moving forward and losing speed
C. Moving forward with uniform speed
D. Moving backward with uniform speed
3 The dimension of linear inertia is:
A. MLT2
B. ML°T-2
C. ML°T°
D. MLT-1
4 If the objects of different masses move with the same velocity, then it is more difficult to stop the
A. lighter of the two
B. massive of the two
C. any one of them
D. both of them
5 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
6 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
7 Force is a:
A. Scalar quantity
B. Base quantity
C. Derived quantity
D. None of these
8 A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about
A. 80 m
B. 20 m
C. 160 m
D. 40 m
9 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
10 Biomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these

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