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Class 9 Physics Online Tests

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The e-Book Physics efficiency Multiple Choice Questions (MCQ Quiz) with answers, physics efficiency MCQs PDF download to learn online 9th grade physics certificate courses. Solve Work and Energy Multiple Choice Questions and Answers (MCQs), Physics Efficiency quiz answers PDF for online school 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 secondary school classes.

The MCQ (a required form of output/total input energy)×100 is equal to: % power, % efficiency, % stress and % strain with "Physics: Efficiency" App Download (Free) for online school courses. Study work and energy quiz questions, download Amazon eBook (Free Sample) for online certificate courses.

## Physics Efficiency MCQ Quiz : Physics MCQs

MCQ 1: (a required form of output/total input energy)×100 is equal to

A) % power
B) % efficiency
C) % stress
D) % 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

A) 0.15
B) 0.25
C) 0.3
D) 0.35

MCQ 3: If some energy given to a system, then energy in the required form obtained is always

A) less than the given energy
B) equal to the given energy
C) greater than the given energy
D) none of above

MCQ 4: A system which gives an output equal to the total energy used by it is called

A) negative system
B) non-ideal system
C) ideal system
D) 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

A) efficiency
B) power
C) stress
D) strain

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