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

An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow

Question # 2

The product of force and time is called

Question # 3

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

Question # 4

The second law gives the relationship between

Question # 5

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

Question # 6

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 7

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

Question # 8

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

Question # 9

If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be

Question # 10

Newton's first law is also called:

Question # 11

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 # 12

At the top of the trajectory of a projectile the acceleration is

Question # 13

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?

Question # 14

The consumption source if energy is:

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The three equation of motions are useful only for
A. linear motion with increasing acceleration
B. line motion with uniform acceleration
C. linear motion with zero acceleration
D. linear motion with varying acceleration
2 Slope of velocity time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
3 The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is
A. 500 ms-1
B. 1000 ms-1
C. 250 ms-1
D. Zero
4 A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be:
A. 10 m/sec2
B. 20 m/sec2
C. 30 m/sec2
D. Zero
5 Rocket engines lift a rocket from the earth surface, because hot gas with high velocity
A. Push against the air
B. React against the rocket and push it up
C. Heat up the air which lifts the rocket
D. Push against the earth
6 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity
7 Tick the conservative force:
A. tension in a string
B. Air resistance
C. Elastic spring force
D. Frictional force
8 Acceleration produced in a body by the 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
9 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
10 A 5 kg mass is falling freely, the force acting on, it will be
A. 19.6 N
B. 9.8 N
C. 5 N
D. Zero

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