Physics Practice Question and Answer
8 Q: What is the refractive index of diamond?
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5f6da978f9079a64e3c0a995- 11.77false
- 21.47false
- 31.44false
- 42.42true
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Answer : 4. "2.42"
Q: Convex lens is used?
1155 05eec76a3eee45c3b837f7bc5
5eec76a3eee45c3b837f7bc5- 1To correct the vision defect in human eyefalse
- 2Visionaryfalse
- 3under microscopefalse
- 4All of the abovetrue
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Answer : 4. "All of the above"
Q: In which year did Albert Einstein predict a new state of matter, the Bose-Einstein condensate (BEC), based on a quantum formulation by the Indian physicist Satyendra Nath Bose?
1154 064c38ae6bd3d254806859ebd
64c38ae6bd3d254806859ebd- 11935false
- 21924true
- 31930false
- 41919false
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Answer : 2. "1924"
Explanation :
1. In which year did Albert Einstein predict a new state of matter, Bose-Einstein condensate (BEC) in 1924, based on the quantum formulation given by Indian physicist Satyendra Nath Bose?
2. Bose–Einstein condensate (BEC) is a state of matter in which a group of boson particles are in the same quantum state.
Q: What type of magnet is used in commercial motors?
1151 05fe45c0c57a5647868b60225
5fe45c0c57a5647868b60225- 1Permanent magnetfalse
- 2umbilical magnetfalse
- 3electromagnettrue
- 4Common rod magnetfalse
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Answer : 3. "electromagnet"
Q: The method of transmission of heat is-
1147 05f8fcfb67793eb35d72651bc
5f8fcfb67793eb35d72651bc- 1Conductionfalse
- 2Convectionfalse
- 3Radiationfalse
- 4All of thesetrue
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Answer : 4. "All of these"
Q: The value of the velocity of sound is the lowest.
1146 05f8fd0813ca2d767b181f610
5f8fd0813ca2d767b181f610- 1Solidfalse
- 2Liquidfalse
- 3Gasestrue
- 4All of thesefalse
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Answer : 3. "Gases "
Q: The instrument that measures and records the relative humidity of air is:
1141 06163f15a8c5cc30e6058a74c
6163f15a8c5cc30e6058a74c- 1Hygrometertrue
- 2Hydrometerfalse
- 3Lactometerfalse
- 4Barometerfalse
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Answer : 1. "Hygrometer"
Q: Used in solar cooker?
1140 05f6da8ddec13dd74800548f7
5f6da8ddec13dd74800548f7- 1concave mirrortrue
- 2convex mirrorfalse
- 3plane mirrorfalse
- 4None of thesefalse
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