Physics Practice Question and Answer
8 4 Q:
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649a9fbcc7d7c7e0672ba384 Answer : 2. "Geiger and Nuttall "
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Q: Which of the following is a unit of heat?
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5eec7b1913d72d584fb8367e- 1Celsiusfalse
- 2Calvinfalse
- 3Fahrenheitfalse
- 4All thesetrue
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Answer : 4. "All these"
Q: is the unit of resistivity?
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5fe41ba09f9e9d787c92b3ac- 1Aom-metertrue
- 2Aom / meterfalse
- 3meterfalse
- 4None of thesefalse
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Answer : 1. "Aom-meter"
Q: When resistors are connected in series, then net resistance____.
1586 26099137c1c52c418ae4c60eb
6099137c1c52c418ae4c60eb- 1Increasestrue
- 2Decreasesfalse
- 3Remains samefalse
- 4None of thesefalse
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Answer : 1. "Increases "
Q: The value of the velocity of sound is the lowest.
1586 05f8fd0813ca2d767b181f610
5f8fd0813ca2d767b181f610- 1Solidfalse
- 2Liquidfalse
- 3Gasestrue
- 4All of thesefalse
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Answer : 3. "Gases "
Q: The velocity of wind is measured by –
1586 05ef1aedd7fed557ba2abd595
5ef1aedd7fed557ba2abd595- 1Hydrometerfalse
- 2Wind vanefalse
- 3Barometerfalse
- 4Anemometertrue
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Answer : 4. "Anemometer "
Q: What constitutes current in a metal wire.
1585 05f571942df171125cbc17f3c
5f571942df171125cbc17f3c- 1neutronsfalse
- 2protonsfalse
- 3electronstrue
- 4None of thesefalse
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Answer : 3. "electrons"
Q: Who found an empirical relationship between the half-life of alpha decay and the energy of the emitted alpha particles in 1911?
1583 0649a9fbcc7d7c7e0672ba384
649a9fbcc7d7c7e0672ba384- 1Fermi and Meitnerfalse
- 2Geiger and Nuttalltrue
- 3Chadwick and Lawrencefalse
- 4Soddy and Astonfalse
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Answer : 2. "Geiger and Nuttall "
Explanation :
In 1911, Geiger and Nuttall discovered an empirical relationship between the half-life of alpha decay and the energy of the emitted alpha particles.
Q: Used in solar cooker?
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5f6da8ddec13dd74800548f7- 1concave mirrortrue
- 2convex mirrorfalse
- 3plane mirrorfalse
- 4None of thesefalse
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Answer : 1. "concave mirror"
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