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NTS - NAT IE Test - Physics - Work and Energy - Quiz 2

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

11. What is the formula for kinetic energy?



12. What is the kinetic energy of a 2 kg mass moving at 3 m/s?



13. What is potential energy?



14. What is the formula for gravitational potential energy?



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



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



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



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



19. What is the formula for efficiency?



20. 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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