Physics Questions Practice Question and Answer
8 Q: Which of the following statements is not correct?
1898 05f8fd438c380c466d4dd1840
5f8fd438c380c466d4dd1840- 1The velocity of sound in air increases as the temperature increases.false
- 2The velocity of sound in air does not depend on pressure.false
- 3The velocity of sound in air decreases with the increase of humidity.true
- 4Noise velocity in air is not affected by change in amplitude and frequency.false
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Answer : 3. "The velocity of sound in air decreases with the increase of humidity."
Q: In what units can we measure food energy?
1878 160b4bda0c6545e40751521af
60b4bda0c6545e40751521af- 1Joulefalse
- 2caloriestrue
- 3Argfalse
- 4None of thesefalse
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Answer : 2. "calories"
Q: On increasing the pressure on ice, what will be its melting point?
1870 0613745b85ee3b079c605e1e7
613745b85ee3b079c605e1e7- 1decreasetrue
- 2increasefalse
- 3become zerofalse
- 4remain unchangedfalse
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Answer : 1. "decrease"
Q: The shortest unit of length is:
1844 061655af33d260361529b0632
61655af33d260361529b0632- 1Angstromsfalse
- 2Fermi metertrue
- 3Micronfalse
- 4Nanometerfalse
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Answer : 2. "Fermi meter "
Q: Which scientist suggested that the magnet must exert an equal and opposite force on the current-carrying conductor?
1841 064c24b4aa919c8488e0dbe6a
64c24b4aa919c8488e0dbe6a- 1Michael Faradayfalse
- 2Andre Marie Amperetrue
- 3Joseph Henryfalse
- 4William Gilbertfalse
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Answer : 2. "Andre Marie Ampere "
Explanation :
1. French scientist Andre-Marie Ampère suggested that a magnet should also exert an equal and opposite force on a current-carrying conductor.
2. A current-carrying wire has its own magnetic field.
3. A current-carrying wire attracts a magnetic material like a normal bar magnet.
4. When the current is withdrawn or the switch is closed, there is no magnetic effect in that case.
5. This phenomenon was called the magnetic effect of current.
Q: Which among the following is a vector quantity?
1832 05f43691b09e4377de92ed2c6
5f43691b09e4377de92ed2c6- 1Heatfalse
- 2Workfalse
- 3Angular momentumtrue
- 4Timefalse
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Answer : 3. "Angular momentum "
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?
1818 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: The length of a wire is L m. The length of the wire is pulled to 2L meters, now the resistance of the wire will be.
1802 05f8feb8e7793eb35d72711b1
5f8feb8e7793eb35d72711b1- 1double the earlierfalse
- 2First four timestrue
- 3One fourth of firstfalse
- 4will remain unchangedfalse
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