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

Which one of the following is dimensionless.

Question # 2

Which of the following four statements is false?

Question # 3

The time rate of change of displacement is called:

Question # 4

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 5

Change in momentum is one second is called:

Question # 6

Change in momentum is one second called.

Question # 7

A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is

Question # 8

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 9

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

Question # 10

When the total displacement is divided by total time taken, we get:

Question # 11

Root out of the conventional source of energy:

Question # 12

Laws of motion are not valid in a system which is

Question # 13

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

Question # 14

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

Question # 15

An aircraft is moving with a velocity of 300 ms-1. If all the forces acting on it are balanced, then

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 An aircraft is moving with a velocity of 300 ms-1. If all the forces acting on it are balanced, then
A. It still moves with the same velocity
B. It will be just floating at the same point in space
C. It will be fall down instantaneously
D. It will lose its velocity gradually
4 In equation F=ma, then mass 'm' is
A. rest mass
B. variable mass
C. inertial mass
D. gravitational mass
5 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
6 In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is
A. 8
B. 4
C. 6
D. 7
7 Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is
A. 45°
B. 60°
C. 50°
D. 40°
8 Earth is considered to be
A. a non-inertial frame
B. an inertial frame
C. an accelerated frame
D. none of the above
9 Distance traveled by a body falling from rest in the first, second and third second is in the ration of
A. 1 : 2 : 3
B. 1 : 3 : 5
C. 1 : 4 : 9
D. None of the above
10 Bodies failing freely under gravity provide good example of motion under
A. non-uniform acceleration
B. uniform acceleration
C. variable acceleration
D. increasing acceleration

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