Class 9 Physics Online Tests
Efficiency MCQ Quiz Online PDF Download
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Class 9 Physics: Efficiency MCQs PDF Download
MCQ: the efficiency of a solar cell is
MCQ: The efficiency of the cyclist when he does 12 J of useful work from every 100 J of food energy he takes is
MCQ: The ratio of required output to input is called
Practice Tests: Class 9 Physics Exam Prep
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