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

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

Question # 3

A body whose momentum is constant must have constant

Question # 4

Tick the conservation force:

Question # 5

Root out the conventional source of energy:

Question # 6

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

Question # 7

One KWh is equal to:

Question # 8

When a bicycle is in motion, the frictional forces exerted by the ground are

Question # 9

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

Question # 10

Swimming is based on the principle of

Question # 11

The decrease in velocity per unit time is called:

Question # 12

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

Question # 13

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

Question # 14

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

Question # 15

Which quantity has the same dimension as that of impulse?

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 Acceleration in a body is always produced in the directin of:
A. Velocity
B. Weight
C. Force
D. Botha B and C
3 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
4 Change in momentum is one second is called:
A. Impulse
B. Force
C. Energy
D. Work
5 By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s2)
A. 58.8 m/s
B. 49 m/s
C. 65 m/s
D. 19.6 m/s
6 A mass of 5kg moves with an acceleration of 10m s-2force applied is
A. 10N
B. 50N
C. 2N
D. 20N
7 A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?
A. 150 m
B. 250 m
C. 350 m
D. 400 m
8 The path (or trajectory) described by a projectile is
A. a parabola
B. a hyperbola
C. a circle
D. a straight line
9 Graphs which are used to illustrate the variation of velocity of an object with time are called
A. distance time graphs
B. speed time graphs
C. velocity time graphs
D. acceleration time graphs
10 Newton's laws are adequate for speeds that are
A. low compared with the speed of light
B. equal to the speed of light
C. greater than the speed of light
D. all of them

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