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"(a required form of output/total input energy)×100 is equal to" Multiple Choice Questions (MCQ) on natural radioactivity with choices % power, % efficiency, % stress, and % strain for online school courses. Solve work and energy quiz questions for online certificate programs for online certificate courses.

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

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

B

MCQ: 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

B

MCQ: 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

A

MCQ: 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

C

MCQ: 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

A