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 direction of the acceleration is the same as that of

Question # 2

Tick the conservative force:

Question # 3

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

Question # 4

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

Question # 5

The velocity given to a body to go out of the influence of earth's gravity is known as:

Question # 6

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Question # 7

One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:

Question # 8

Force is a:

Question # 9

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Question # 10

If speed of electron is 5 x 105m/s. How long does it take one electron to transverse 1 m?

Question # 11

Unit of impulse in

Question # 12

The distance covered by a body in unit time is called.

Question # 13

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

Question # 14

Which of the following four statements is false?

Question # 15

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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)
2 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
3 The entity which measures the quantity of motion in a body is called
A. force
B. energy
C. momentum
D. power
4 According to the law of conservation of linear momentum, the total linear momentum of an isolated system
A. increases
B. decreases with time
C. remains constant
D. none of them
5 The shortest distance between two points directed from its initial point to final point is called:
A. Velocity
B. Displacement
C. Speed
D. Distance
6 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
7 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these
8 The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
9 The motion of a projectile is
A. one dimension
B. two dimension
C. three dimension
D. all of them
10 When body moves with increasing acceleration, its velocity time graph is a
A. straight line
B. horizontal straight line
C. vertical straight line
D. curve

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