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 is a Quantity

Question # 2

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

Question # 3

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

Question # 4

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 # 5

The work performed on an object does not depend on:

Question # 6

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:

Question # 7

A solar cell converts energy of the Sun into:

Question # 8

The commercial unit of electrical energy is :

Question # 9

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

Question # 10

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

Question # 11

Which one is conservative force

Question # 12

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 # 13

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

Question # 14

Work has a dimension as that of:

Question # 15

A field in which the work done in moving a body along closed path is zero is called

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
2 When a body moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
3 The field in which work done in moving a body between two points depends upon the path followed is called:
A. Conservative field
B. Non-conservative field
C. Electric field
D. None of these
4 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
5 When force and displacement are perpendicular to each other than work is equal to
A. Unity
B. Infinity
C. Zero
D. -Fd
6 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
7 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
8 Work is product of:
A. Force and velocity
B. Heat and energy
C. Force and displacement
D. None of these
9 The power of an electric generating station is expressed in:
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
10 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt

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