Physics Practice Question and Answer
8 4 Q:
64c3967e29beb3482a3bcc75 Answer : 1. "6 Ω"
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Q: A light bulb working on an 18 V battery draws a current of 3 A. What will be the resistance of the bulb?
1713 064c3967e29beb3482a3bcc75
64c3967e29beb3482a3bcc75- 16 Ωtrue
- 22 Ωfalse
- 34 Ωfalse
- 43 Ωfalse
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Answer : 1. "6 Ω"
Explanation :
An electric bulb running on 18 V battery draws 3A of electric current. The resistance of the bulb will be 6 Ω.
Q: The substance which conducts current in the solid state is –
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5f2cdd33be9f31290fb7ca73- 1iodinefalse
- 2sodium chloridefalse
- 3diamondfalse
- 4graphitetrue
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Answer : 4. "graphite "
Q: Which of the following is false?
Sound waves are _________ waves.
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5ee85c07109b5d6e015e31edSound waves are _________ waves.
- 1Pressurefalse
- 2Longitudinaltrue
- 3Electromagneticfalse
- 4Mechanicalfalse
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Answer : 2. "Longitudinal"
Q: Stands in front of the driver of the motor vehicle?
1703 05f6da9c95256e8407c2ebe13
5f6da9c95256e8407c2ebe13- 1concave mirrorfalse
- 2plane mirrorfalse
- 3convex mirrortrue
- 4Othersfalse
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Answer : 3. "convex mirror"
Q: What type of light beam is obtained by flashlight?
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5f6daa1cec13dd7480054f57- 1parallel light beamfalse
- 2convergent lighttrue
- 3Unrefracted light beamfalse
- 4All the statements are truefalse
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Answer : 2. "convergent light"
Q: Light year is the unit of measurement of
1671 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: The velocity of sound in air is approx.
1667 15f0ff47c4e2c7631e439119f
5f0ff47c4e2c7631e439119f- 1340 m / sfalse
- 2330 m / strue
- 3110 m / sfalse
- 4232 m / sfalse
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Answer : 2. "330 m / s"
Q: Who invented electromagnetic theory?
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5f06f28a3f7f070477964316- 1Thomas Alva additionfalse
- 2J. J. Thomsonfalse
- 3Michael Faradaytrue
- 4None of thesefalse
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Answer : 3. "Michael Faraday "
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