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

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

Question # 2

Acceleration of a body is negative if the velocity of the body is

Question # 3

The time rate of change of displacement is called:

Question # 4

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

Question # 5

Biomass includes:

Question # 6

When a shall explodes a mid-air, the total momentum of its fragments is

Question # 7

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

Question # 8

Acceleration produced in a body by the force varies

Question # 9

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 10

The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to

Question # 11

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

Question # 12

A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:

Question # 13

The vertical component of velocity of a projectile during its motion is minimum

Question # 14

Flight of rocket in the space is an example of

Question # 15

If the values of instantaneous and average velocities are equal, the body is said to be moving with

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The horizontal range of projectile, at a certain place, depends upon
A. the mass of the projectile
B. velocity of projection
C. angle of projection
D. angle as well as velocity of projection
2 A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be
A. 7.71 m s-2
B. 0.5m s-2
C. 0.15m s-2
D. 0.092m s-2
3 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
4 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
5 A body of mass 5 kg is acted upon by a total change n momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
6 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)
7 Acceleration produced in a body by a force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them
8 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
9 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
10 The shortest distance between two points directed from its initial point to final point is called:
A. Velocity
B. Displacement
C. Speed
D. Distance

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