Physics Questions Practice Question and Answer
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Q: The product of mass and velocity of an object is called-
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5f86a7c688adb713cedfa566- 1momentumtrue
- 2accelerationfalse
- 3volumefalse
- 4densityfalse
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Answer : 1. "momentum"
Q: Mechanical Energy is:
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5f86a4cdb7ad805e26c17e96- 1The energy release during mechanical work.false
- 2The sum of kinetic energy and the potential energy of an object.true
- 3Equal to the rate of doing work.false
- 4The Energy absorbed during movement of a body.false
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Answer : 2. "The sum of kinetic energy and the potential energy of an object. "
Q: A 1 kg object is dropped from a height of 30 meters to the ground. The work done by the force of gravity will be
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5f86a39bb7ad805e26c16cb0- 130 Jfalse
- 210 Jfalse
- 30.33 Jfalse
- 4300 Jtrue
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Answer : 4. "300 J"
Q: The product of force and displacement is called—
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5f86a302b7ad805e26c163d8- 1Accelerationfalse
- 2Worktrue
- 3Momentumfalse
- 4Weightfalse
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Answer : 2. "Work"
Q: An object starts moving in its steady state. It attains a speed of 5 m / s in 2 seconds. What will be its acceleration?
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5f869de3e5230d620733716e- 12.5 m/sec2true
- 22 m/sec2false
- 31 m/sec2false
- 40.4 m/sec2false
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Answer : 1. "2.5 m/sec2"
Q: How is 'Power’ interpreted?
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5f869be0b7ad805e26c0af01- 1Work done in energy transferfalse
- 2Working rate or energy transfer ratetrue
- 3Work done in a minutefalse
- 4Force applied to increase the loadfalse
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Answer : 2. "Working rate or energy transfer rate "
Q: The principle on which optical fiber works is
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5f746ec3a921aa16e68c3704- 1Full internal reflectiontrue
- 2Refractionfalse
- 3Scatteringfalse
- 4Deviationfalse
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Answer : 1. "Full internal reflection"
Q: Transformers are used
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5f72ea92a921aa16e6825ed6- 1To convert AC into DCfalse
- 2To convert DC to ACfalse
- 3To detect DC voltagefalse
- 4To oxidation or reduce AC voltagetrue
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Answer : 4. "To oxidation or reduce AC voltage"
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