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

Work done is lowering the bucket into the well is:

Question # 2

Work is product of:

Question # 3

Which of the following type of force can do no work on the particle on which it acts:

Question # 4

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

Question # 5

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 6

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 # 7

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 8

In the force applied to parallel to the direction of motion, then the work done is:

Question # 9

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:

Question # 10

Watt x second is unit of:

Question # 11

When force and displacement are perpendicular to each other than work is equal to

Question # 12

The work performed on an object does not depend on

Question # 13

The energy stored int he water of the dam is:

Question # 14

The tidal energy is produced due to rotation of Earth relative to:

Question # 15

When the body is moves against the force of friction on a horizontal plane, the work done by the body is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Area under the force displacement graph gives
A. Power
B. Work
C. Heat
D. Energy
2 If force and displacement are in opposite direction, the work done is taken as
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
3 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
4 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
5 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
6 Teh consumption of energy by a 1000 watt heater in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
7 The space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
8 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
9 Work is a always done on a body when
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B are correct
10 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b

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