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

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

Question # 2

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

Question # 3

The three equation of motions are useful only for

Question # 4

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

Question # 5

A body of mass 5 kg is acted upon by a total change n momentum will be:

Question # 6

Ethanol (alcohol) as a type of:

Question # 7

The horizontal range of projectile, at a certain place, depends upon

Question # 8

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Question # 9

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 10

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

Question # 11

The path followed by the projectile is known as:

Question # 12

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

Question # 13

For maximum linear distance of travel, a projectile must be fired at an angle of

Question # 14

Which one of the following is dimensionless:

Question # 15

The second law gives the relationship between

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If a ball comes back to its starting point after bouncing off the wall several times, then its
A. total displacement is zero
B. average velocity is zero
C. none of them
D. both of them
2 When the total displacement is divided by total time taken, we get:
A. Velocity
B. Average speed
C. Average velocity
D. None of these
3 A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is
A. 3,600 N
B. 7,200 N
C. 10,000 N
D. 100,000 N
4 The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to
A. zero
B. maximum
C. minimum
D. infinity
5 A ball is dropped downwards After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds
A. 25 m
B. 20 m
C. 50 m
D. 9.8 m
6 One KWh is equal to:
A. 3.6 x 102J
B. 3.6 KJ
C. 3.6 x 101KJ
D. 3.6 MJ
7 A body is thrown from a height h with speed u, it hits the ground with speed V
A. The value of V is maximum if the body is thrown vertically downward
B. The value of V is maximum if the body is thrown vertically upwards
C. The value of V is minimum if the body is thrown horizontally
D. The value of V does not depend on the direction of which it is thrown
8 Acceleration of a body is positive, if the velocity of the body is
A. constant
B. increasing
C. decreasing
D. none of them
9 A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding?
A. 4.2 m
B. 8.4 m
C. 12.6 m
D. none of these
10 The slopes of the tangent at any point on the curve gives the value of the
A. average velocity at that point
B. instantaneous velocity at that point
C. average acceleration at that point
D. instantaneous acceleration at that point

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