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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-10 section-1

Each section contains 100 MCQs on Work, Energy and Power .
91
When the force exerted on an object, then the work done will be zero if it has displacement.
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Answer & Solution
Answer: Option D
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92
Mechanical energy is the sum of
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Answer & Solution
Answer: Option A
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93
When two equal forces are acting on a body and in the opposite direction, the force acting on the body becomes . . . . . . . .
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Answer & Solution
Answer: Option B
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94
A man jumped at a speed of 5 metre per second from a stationary boat and the boat moved off with the speed of 0.5 metre per second. How many times is the mass of the boat greater than that of the man?
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Answer & Solution
Answer: Option D
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95
The example of non-conventional sources of energy is
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Answer: Option D
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96
An object of mass 15kg is moving at the uniform velocity as 5m/s. Find the kinetic energy contained in an object?
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Answer: Option A
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97
An object of 1kg is dropped to the ground from a height of 30m. What is the work done by the force of gravity? (g = 10 m/s2)
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Answer & Solution
Answer: Option B
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98
A truck, a car and a motorcycle have equal kinetic energies. If equal, stopping forces are applied and they stop after travelling a distance of X, Y and Z respectively, then
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Answer & Solution
Answer: Option C
Solution:
The work done by the stopping force in bringing a body to rest is equal to its initial kinetic energy.

Work done = Force × Distance = Kinetic Energy

If the same retarding force is applied to the truck, car, and motorcycle, and all three have the same kinetic energy, then:

Distance travelled before stopping = KE / Force

Since KE is equal for all and Force is also equal, the stopping distance will be the same for each vehicle.

Therefore:

X = Y = Z

Hence, the correct option is E.
99
What is the kinetic energy of the bicycle having 10kg weight moving at a speed of 20m/s?
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Answer & Solution
Answer: Option D
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100
Energy that is produced commercially from coal is called
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Answer & Solution
Answer: Option C
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