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

When a body is moving on a surface, the force of friction is called

Question # 2

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?

Question # 3

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

Question # 4

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

Question # 5


Swimming becomes possible because of______law of motion:

Question # 6

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

Question # 7

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 8

The motion of a projectile is

Question # 9

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

Question # 10

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

Question # 11

The quantity F x t is called as

Question # 12

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 # 13

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 14

Change in momentum is one second is called:

Question # 15

Root out of the conventional source of energy:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
2 The time rate of change of displacement is called:
A. Time
B. Acceleration
C. Speed
D. Velocity
3 A dirty carpet is to be cleaned by heating. This is in according with______law of motion.
A. First
B. Second
C. Third
D. None of these
4 The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?
A. 400 m
B. 300 m
C. 200 m
D. 100 m
5 A typical rocket consumes about
A. 100 kg s-1of fuel
B. 1000 kg s-1of fuel
C. 10000 kg s-1of fuel
D. 100000 kg s-1of fuel
6 Which of the following statements for an object in equilibrium is not true?
A. The object must be at rest
B. The object can be at rest
C. The object is moving at constant speed
D. The acceleration of the object is zero
7 The vertical component of velocity of a projectile during its motion is minimum
A. at the time of projection
B. at the highest point
C. just before hitting the plane of projection
D. all of them
8 A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is
A. 120 x 10.8 N
B. 180 N
C. 720 N
D. 360 N
9 A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is
A. m
B. 2 m
C. 4 m
D. Infinity
10 Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?
A. The faster one
B. Depends on their mass
C. The slower one
D. Both will reach simultaneously

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