By Online ECAT Physics Work and Energy Test Preparation
Online ECAT Physics work Energy Test based on MCQs. Click to start Quiz button.
Conservative Field
The field in which total work done is independent of the path followed (and it depends only on initial and final positions), is called conservative field. In such fields, total work done in a closed Path (A –>B–> C –>A) is zero. Gravitational field is a conservative field.
Power:
Power of a device is defined as its rate of doing, work.
Physics Work and Energy
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Question 1 of 15
1. Question
2 pointsThe work done by the body is maximum when it has angle
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Question 2 of 15
2. Question
2 pointsA 70 kg man runs up a long height of stairs in 4.0 se. The vertical height of the stairs is 4.5 m. Calculate its power output in watts
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Question 3 of 15
3. Question
2 pointsSI unit of work is?
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Question 4 of 15
4. Question
2 pointsOne kilowatt hour is equal
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Question 5 of 15
5. Question
2 pointsOutput of a truck is 4500 J and its efficiency is 50%, input energy provided to truck is
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Question 6 of 15
6. Question
2 pointsAn object is lifted 5 m above levelled ground, mass of object is 20 kg and gravitational pull is 10 N kg-2, Ep of object is
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Question 7 of 15
7. Question
2 pointsWork done by variable force is determine by dividing
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Question 8 of 15
8. Question
2 pointsThe escape velocity of a body in gravitational field of earth is independent of
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Question 9 of 15
9. Question
2 pointsWhen force is applied on an object but object does not move, it means that
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Question 10 of 15
10. Question
2 pointsWork done by the force of friction is
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Question 11 of 15
11. Question
2 pointsIf velocity is doubled then
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Question 12 of 15
12. Question
2 pointsOne mega watt hour is equal to
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Question 13 of 15
13. Question
2 pointsWhich of the following is not conservative force
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Question 14 of 15
14. Question
2 pointsThe relation between the escape velocity V esc and orbital speed Vo is given by
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Question 15 of 15
15. Question
2 pointsWhen two protons are brought together
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Leaderboard: Physics Work and Energy
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