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ECAT Pre General Science Physics Chapter 4 Work and Energy
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Total Questions30
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Time Allowed30
ECAT Pre General Science Physics Chapter 4 Work and Energy
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Question # 1
A solar cell converts energy of the Sun into:
Question # 2
Watt x second is unit of:
Question # 3
Power is a :
Question # 4
Area under the force displacement graph gives
Question # 5
Which force is not a conservative force?
Question # 6
Energy stored in the spring of a watch is called
Question # 7
Work is a scalar product of
Question # 8
1 J = ________?
Question # 9
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 # 10
Work done is independent of path followed in _______
Question # 11
The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
Question # 12
When velocity of moving body is doubled, the quantity which is also doubled is its:
Question # 13
Tick the conservation force:
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
The angle between centripetal force and displacement of the body moving in a circle is:
Question # 16
The space around the earth within it exerts a force of attraction on other bodies of known as:
Question # 17
The value of escape velocity of Earth planet comes out to be:
Question # 18
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:`
Question # 19
Work-energy principle states that work done on the body by applied force is equal to change in:
Question # 20
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 the direction of motion will be:
Question # 21
The work performed on an object does not depend on:
Question # 22
Maximum work is done when force and displacement are
Question # 23
The space around the earth in which its gravitational force acts on a body is called
Question # 24
Work done is maximum when angle between force and displacement is
Question # 25
The tidal energy is due to gravitational pull of :
Question # 26
Work is a Quantity
Question # 27
Which of the following is not a unit of power:
Question # 28
Escape velocity from surface of Moon as compared to that from Earth surface is:
Question # 29
The unit of work in CGS system is
Question # 30
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:
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