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

Maximum work is done when force and displacement are

Question # 2

Work is a scalar product of

Question # 3

Work has the dimensions as that of

Question # 4

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

Question # 5

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 6

The work done in moving a body between two points in a conservative field is independent of the

Question # 7

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

Question # 8

Tick the conservation force:

Question # 9

Work done is maximum when angle between force and displacement is:

Question # 10

The energy stored int he water of the dam is:

Question # 11

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

Question # 12

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

Question # 13

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 14

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

Question # 15

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
2 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
3 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
4 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
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 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
7 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
8 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
9 The value of escape velocity of Earth planet comes out to be:
A. 11 m/sec
B. 11 km/sec
C. 11 km/hour
D. 11 cm/sec
10 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

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