Physics Practice Question and Answer
8 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: The ‘Choke’ is used with a tube light is basically
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5f587180f13b91397f413467- 1An inductortrue
- 2A capacitorfalse
- 3A transformerfalse
- 4A resistorfalse
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Answer : 1. "An inductor"
Q: Denmark is called?
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60b4b5fbc6545e407514fe55- 1Country of Industryfalse
- 2Hydropower Countryfalse
- 3Country of the windstrue
- 4Country of mineral clustersfalse
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Answer : 3. "Country of the winds"
Q: Necessary to get nuclear energy?
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60b4a8479587b71934e7a296- 1Chromiumfalse
- 2Siliconfalse
- 3Uraniumtrue
- 4Aluminumfalse
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Answer : 3. "Uranium"
Q: Does the Sun look round at sunrise and sunset?
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5f6da4f7f9079a64e3c04cbe- 1Sphericalfalse
- 2Cubicfalse
- 3Ellipticalfalse
- 4flattrue
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Answer : 4. "flat"
Q: The Ratio of the total distance is travelled by a body to the total time taken by it is its.
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5f02b102e890ce63e579f6b6- 1Instantaneous velocityfalse
- 2Linear velocityfalse
- 3Average Speedtrue
- 4Accelerationfalse
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Answer : 3. "Average Speed"
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?
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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: Which scientist suggested that the magnet must exert an equal and opposite force on the current-carrying conductor?
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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.