Physics Efficiency Multiple Choice Questions with Answers – PDF Download

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