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The Physics efficiency Multiple Choice Questions (MCQ Quiz) with Answers PDF (Physics Efficiency MCQ PDF e-Book) download to practice Grade 9 Physics Tests. Study Work and Energy Multiple Choice Questions and Answers (MCQs), Physics Efficiency quiz answers PDF for high school certification courses. The Physics Efficiency MCQ App Download: Free learning app for forms of energy, interconversion of energy, potential energy, physics practice questions test prep for online classes.

The MCQ: An body builder does 15 Joules of useful work from every 60 Joules of food energy which he takes. His efficiency will be; "Physics: Efficiency" App Download (Free) with answers: 0.15; 0.25; 0.3; 0.35; for high school certification courses. Solve Work and Energy Quiz Questions, download Apple eBook (Free Sample) for taking online classes.

## Physics Efficiency MCQs: Questions and Answers

MCQ 1:

(a required form of output/total input energy)×100 is equal to

1. % power
2. % efficiency
3. % stress
4. % strain
MCQ 2:

An body builder does 15 Joules of useful work from every 60 Joules of food energy which he takes. His efficiency will be

1. 0.15
2. 0.25
3. 0.3
4. 0.35
MCQ 3:

If some energy given to a system, then energy in the required form obtained is always

1. less than the given energy
2. equal to the given energy
3. greater than the given energy
4. none of above
MCQ 4:

A system which gives an output equal to the total energy used by it is called

1. negative system
2. non-ideal system
3. ideal system
4. slow system
MCQ 5:

The ratio of required form of energy obtained from a system as output to the total energy given to it as input is called its

1. efficiency
2. power
3. stress
4. strain