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HEC ETC - USAT GS Entry Test - Physics - Work and Energy - Quiz 2

Practice 10 high yield MCQs on Physics from Chapter Work and Energy for USAT GS Entry Test. After submission, get instant results with correct answers and detailed explanations. This is Quiz 2 of the series.

11. What is the potential energy of a 5 kg mass at height 10 m? (Take g=10 m/s²)



12. What does the law of conservation of energy state?



13. What remains constant in the absence of external forces?



14. What happens to energy when a ball is thrown upward?



15. What is the formula for efficiency?



16. What is the efficiency of a machine with output work 80 J and input work 100 J?



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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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