Physics Practice Question and Answer
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64c24ac166a41f484c177c91 Answer : 3. "Resistance of a wire depends on the length and cross-section of the wire."
Q: Who discovered electromagnetic induction?
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5fe4694b1722ec797460fb17- 1Maxwellfalse
- 2Flemingfalse
- 3Faradaytrue
- 4Amperefalse
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Answer : 3. "Faraday"
Q: Light year is the unit of measurement of
2180 062565df1ac719c4dd28ac685
62565df1ac719c4dd28ac685- 1the age of the universefalse
- 2very short time - lapsefalse
- 3very high temperaturefalse
- 4very long distancetrue
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Answer : 4. "very long distance "
Q: Stands in front of the driver of the motor vehicle?
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5f6da9c95256e8407c2ebe13- 1concave mirrorfalse
- 2plane mirrorfalse
- 3convex mirrortrue
- 4Othersfalse
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Answer : 3. "convex mirror"
Q: The velocity of sound in air is approx.
2170 15f0ff47c4e2c7631e439119f
5f0ff47c4e2c7631e439119f- 1340 m / sfalse
- 2330 m / strue
- 3110 m / sfalse
- 4232 m / sfalse
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Answer : 2. "330 m / s"
Q: Kilowatt hour (KWH) unit is-
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5f8febf07793eb35d727143c- 1Energytrue
- 2Powerfalse
- 3Electric chargefalse
- 4Electrical currentfalse
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Answer : 1. "Energy "
Q: An object is placed in front of a concave mirror at a point between its focus point and the centre of curvature. The image to be created will be:
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5f86b3bdb7ad805e26c1f65d- 1virtual and straightfalse
- 2Virtual and oppositefalse
- 3Real and oppositetrue
- 4Real and straightfalse
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Answer : 3. "Real and opposite"
Q: An iron needle floats on the surface of water. What is the reason for this phenomenon?
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613744053ee2bf25f5130f7f- 1viscosityfalse
- 2acceleration due to gravityfalse
- 3surface tensiontrue
- 4none of thesefalse
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Answer : 3. "surface tension"
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.
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