Physics Questions 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."
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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?
2110 0613744053ee2bf25f5130f7f
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.
Q: What is the unit of electric quantity?
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60b4bde8517f2874d53f7714- 1Omfalse
- 2voltsfalse
- 3amperetrue
- 4Wattfalse
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Answer : 3. "ampere"
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 "
Q: What type of reflection is made on the cinema screen?
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5fe469ef9002d17b1c433c2b- 1virtual imagefalse
- 2real reflectiontrue
- 3bothfalse
- 4All the statements are truefalse
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Answer : 2. "real reflection"
Q: Household appliances based on thermal effect of electric current is-
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5f8fecaa9e18f97b703a48b3- 1Electric heaterfalse
- 2Electric bulbfalse
- 3Tubelightfalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Q: Eye lens is?
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5eec7a75eee45c3b837f8207- 1convergenttrue
- 2Divergentfalse
- 3convex and concavefalse
- 4None of thesefalse
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Answer : 1. "convergent"
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