ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 4 Work and Energy

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 2

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 3

Work done by the force of friction is always

Question # 4

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 5

Work done in lower and bucket into the well is:

Question # 6

Work is always done on a body when:

Question # 7

When a falling body hits ground, its KE changes to _____ energy.

Question # 8

The work performed on an object does not depend on:

Question # 9

The value of escape velocity of Earth planet comes out to be:

Question # 10

If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:

Question # 11

The space around the earth within it exerts a force of attraction on other bodies of known as:

Question # 12

Which force is not a conservative force:

Question # 13

Energy stored in the spring of a watch is called

Question # 14

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 15

Work done is maximum when angle between force and displacement is

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ECAT Class Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
D. None of these
2 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
3 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
4 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
5 If we draw a graph between d(along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis then area under this straight line represents:
A. Power
B. Work
C. Pressure
D. None of these
6 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
7 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
8 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
9 Work is a Quantity
A. Vector
B. Scalar
C. Non-physical
D. None of these
10 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these

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