General Studies & Exam Prep•Updated for 2026 Competitive Exams
Best Work Energy and Power MCQS
Practice top multiple choice questions (MCQs), topic summary, and verified answers for Best Work Energy and Power MCQS. Essential for Central & State competitive examinations. Solve these high-frequency practice questions with step-by-step solutions to evaluate your preparation level.
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Practice Questions & Explanations (20 Questions)
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Q1SSC / NDAMedium
The SI unit of work is:
Q2SSC / NDAMedium
Work done is zero when the angle between force and displacement is:
Q3SSC / NDAMedium
The rate of doing work is called:
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Q4SSC / NDAMedium
One horsepower (hp) is equal to approximately:
Q5SSC / NDAMedium
Kinetic energy of an object depends on its:
Q6SSC / NDAMedium
If the velocity of an object is doubled, its kinetic energy becomes:
Q7SSC / NDAMedium
Potential energy of a body at a height 'h' is given by:
Q8SSC / NDAMedium
According to the law of conservation of energy, total energy:
Q9SSC / NDAMedium
A stretched bow string possesses which type of energy?
Q10SSC / NDAMedium
Commercial unit of electrical energy is:
Q11SSC / NDAMedium
One kilowatt-hour (kWh) is equal to:
Q12SSC / NDAMedium
When a ball is thrown upward, its potential energy:
Q13SSC / NDAMedium
Work done by friction is always:
Q14SSC / NDAMedium
An object of mass 1 kg has a potential energy of 1 J relative to the ground when it is at a height of:
Q15SSC / NDAMedium
In which of the following cases is no work done?
Q16SSC / NDAMedium
The energy possessed by wind is primarily:
Q17SSC / NDAMedium
A spring is compressed. Its potential energy:
Q18SSC / NDAMedium
Which of the following is NOT a unit of energy?
Q19SSC / NDAMedium
If a machine does 500 J of work in 10 seconds, its power is:
Q20SSC / NDAMedium
The work-energy theorem states that work done by all forces equals the change in:
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