Class 9 Physics MCQs (Grade 9) From Textbook
Class 9 Physics MCQ App | Work and Energy e-Book PDF Download
Class 9 Physics MCQs – Practice Test 14 (Chapter 9)
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The ratio of required output to input is called
When a body vibrates, it produces
1 joule is equal to
In nuclear power plants, we get energy as a result of
The potential energy is given by
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