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ISSB Initial Tests - Academic Test - Physics - Power Work And Energy - Quiz 3

Practice 10 high yield MCQs on Physics from Chapter Power Work And Energy for Academic Test. After submission, get instant results with correct answers and detailed explanations. This is Quiz 3 of the series.

21. The work done by a non-conservative force (like friction) depends on:



22. The efficiency of a machine is defined as:



23. A motor lifts a mass of 100 kg to a height of 10 m in 5 s. The power output is (g=10 m/s²):



24. The unit of power in SI is watt. 1 watt is equal to:



25. A ball is dropped from a height h. Just before hitting the ground, its kinetic energy is (ignoring air resistance):



26. The height from which a body must be dropped to achieve a speed v is:



27. A 60 W bulb consumes energy at the rate of 60 J per second. In 10 minutes, it consumes:



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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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