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Work, Energy and Power MCQ question and answer with solution | Physics Gk MCQs

Learn Work, Energy and Power MCQ Questions and answers with easy and logical explanations in Physics Gk . Work, Energy and Power MCQ question provides all type of technical mcq questions which is important for SSC-CGL, UPPSC, NDA, CDS and all govt examinations Page-4 section-2

Each section contains 100 MCQs on Work, Energy and Power .
31
Just before hitting the earth, the kinetic energy of an object of mass 2 kg is 400 J. At which height it was dropped?
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Answer & Solution
Answer: Option C
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32
When an object move 1m distance by 1N force on the direction of force then work done will-
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Answer & Solution
Answer: Option D
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33
A gun of mass 5 kg fires a bullet of mass 0.01 kg. If the initial velocity of bullet is 250 m/s then find the recoil velocity of gun.
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Answer: Option A
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34
Mechanical energy is a combination of kinetic energy and-
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Answer: Option C
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35
As an object falls freely its . . . . . . . .
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Answer: Option B
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36
Calculate the potential energy obtained by a 20kg hammer, when it is raised to a height of 10m?
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Answer: Option B
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37
A mobile was dropped from a balcony if the mass of the mobile phone is 0.5kg and the mobile phone was dropped from a height of 100m, g = 10m/s2. So what is the potential energy of mobile phone?
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Answer: Option D
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38
Efficiency of work is known as-
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Answer: Option A
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39
A horizontal force of 10 N displaces an object of 5 kg to a distance of 2 m in the direction of the force. What will be the work done by the object?
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Answer: Option A
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40
If the speed of a moving object is doubled . . . . . . . .
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Answer: Option C
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