Class 9 Online Courses

Grade 9 Physics MCQ - Topics

Learn Physics efficiency Multiple Choice Questions (MCQ Quiz), physics efficiency quiz answers PDF to study 9th grade physics online course. Work and Energy Multiple Choice Questions and Answers (MCQs), Physics Efficiency quiz questions PDF for online school courses. Physics Efficiency Book PDF: forms of energy, interconversion of energy, potential energy, physics practice questions test prep for online secondary school classes.

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

## MCQs on Physics Efficiency

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

% power
% efficiency
% stress
% strain

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

0.15
0.25
0.3
0.35

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

less than the given energy
equal to the given energy
greater than the given energy
none of above

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

negative system
non-ideal system
ideal system
slow system

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

efficiency
power
stress
strain

### More MCQs on Grade 9 Physics Book    