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: Which of the following is false?
Sound waves are _________ waves.
2014 05ee85c07109b5d6e015e31ed
5ee85c07109b5d6e015e31edSound waves are _________ waves.
- 1Pressurefalse
- 2Longitudinaltrue
- 3Electromagneticfalse
- 4Mechanicalfalse
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Answer : 2. "Longitudinal"
Q: A typical example of a semiconductor is _______?
2012 05fe1bcbb4c864b4aa0de4b47
5fe1bcbb4c864b4aa0de4b47- 1Platinumfalse
- 2Germaniumtrue
- 3Quartzfalse
- 4Micafalse
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Answer : 2. "Germanium"
Q: What type of reflection is made on the cinema screen?
1993 05fe469ef9002d17b1c433c2b
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-
1991 05f8fecaa9e18f97b703a48b3
5f8fecaa9e18f97b703a48b3- 1Electric heaterfalse
- 2Electric bulbfalse
- 3Tubelightfalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Q: What is the unit of electric quantity?
1987 160b4bde8517f2874d53f7714
60b4bde8517f2874d53f7714- 1Omfalse
- 2voltsfalse
- 3amperetrue
- 4Wattfalse
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Answer : 3. "ampere"
Q: Image formed on retina in human eye?
1957 05eec7a129857693341407ce2
5eec7a129857693341407ce2- 1is inverted only appears upside downfalse
- 2is upright but gives inverted image.true
- 3Inverted but directly visiblefalse
- 4is straightfalse
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Answer : 2. "is upright but gives inverted image."
Q: The density of milk can be obtained by the use of –
1941 05f35fb32efa02861bb1b660c
5f35fb32efa02861bb1b660c- 1Lactometertrue
- 2Thermometerfalse
- 3Hydrometerfalse
- 4Butyrometerfalse
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Answer : 1. "Lactometer "
Q: Identify the correct statement.
1938 164c24ac166a41f484c177c91
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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