Physics Practice Question and Answer
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5efc04d030aa3b4ee606c299 4 Q:
64c24ac166a41f484c177c91 Answer : 3. "Resistance of a wire depends on the length and cross-section of the wire."
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Q: Who discovered the principle of 'Law of Floating’?
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616e861dd7d2797c4a88a397- 1Galileofalse
- 2Archimedestrue
- 3Newtonfalse
- 4Writer Brothersfalse
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Answer : 2. " Archimedes "
Q: Alternating current is converted to direct current –
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5efc04d030aa3b4ee606c299- 1By Transformerfalse
- 2By Rectifiertrue
- 3By Dynamofalse
- 4By Motorfalse
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Answer : 2. "By Rectifier"
Q: Identify the correct statement.
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64c24ac166a41f484c177c91- 1The resistance of a wire depends on the length and density of the wire.false
- 2Specific resistance is the same for all conductors.false
- 3Resistance of a wire depends on the length and cross-section of the wire.true
- 4Specific resistance is dependent on the cross-sectional area of the wire.false
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Answer : 3. "Resistance of a wire depends on the length and cross-section of the wire."
Explanation :
1. Resistance of a wire depends on the length and cross-section of the wire.
Q: Farad is unit of ___________.
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62de747c8c996774cb934336- 1Capacitancetrue
- 2Reactancefalse
- 3Electric chargefalse
- 4Electric conductancefalse
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Answer : 1. "Capacitance"
Q: Acceleration is
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5f43812309e4377de92f37f8- 1Inversely proportional to forcefalse
- 2Directly proportional to forcetrue
- 3Directly proportional to massfalse
- 4Inversely proportional to massfalse
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Answer : 2. "Directly proportional to force "
Q: Who has the maximum field of vision?
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5eec76f81dab100936f0c587- 1plane mirrorfalse
- 2convex mirrortrue
- 3concave mirrorfalse
- 4All of themfalse
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Answer : 2. "convex mirror"
Q: The SI unit of mechanical power is:
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61655cb83ee3b5612c8e137d- 1Newton - secondfalse
- 2Joule - secondfalse
- 3Joulefalse
- 4Watttrue
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Answer : 4. "Watt "
Q: The depth of the bucket filled with water seems low. this is due to ?
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5f6da70e5256e8407c2e69b1- 1complete internal reflectionfalse
- 2refractiontrue
- 3Reflectionfalse
- 4None of thesefalse
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Answer : 2. "refraction"
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