Physics Practice Question and Answer
8 Q: The capacity of parallel plate condenser is dependent on the
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63c8e9831c47ef334be0ee88- 1The separation between the platesfalse
- 2The metal used for the constructiontrue
- 3The thickness of the platefalse
- 4The potential applied across the platesfalse
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Answer : 2. "The metal used for the construction"
Explanation :
Therefore, the capacity of a parallel plate capacitor directly depends on the relative permittivity of dielectric material, the permittivity of space, the area of plates, and is inversely dependent on the separation between the plates.
Q: Find the molecular mass of a gas that takes three times more time to effuse as compared to He with the same volume
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63c8f8598731ac33279f04bb- 19 ufalse
- 264 utrue
- 327 ufalse
- 436 ufalse
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Answer : 2. "64 u"
Explanation :
Its molecular mass will be: 64u.
Q: A wire loop is rotated in a magnetic field such that the frequency of change of direction of the induced emf is
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63c8dfd58731ac33279e451b- 1Six times per revolutionfalse
- 2Four times per revolutionfalse
- 3Twice per revolutiontrue
- 4Once per revolutionfalse
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Answer : 3. "Twice per revolution"
Q: The induced current is the highest when the direction of motion of the coil is:
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64a2afe73662c8741d1a3f77- 1not at right angles to the magnetic fieldfalse
- 2at right angles to the electricityfalse
- 3at right angles to the electric sourcefalse
- 4at right angles to the magnetic fieldtrue
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Answer : 4. "at right angles to the magnetic field"
Explanation :
1. Induced current is highest when the direction of motion of the coil is perpendicular to the magnetic field.
Q: According to Dalton’s atomic theory, atoms combine in the ratio of small whole numbers to form ______.
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64919f9ec7d7c7e0670d10b8- 1Neutronsfalse
- 2Moleculesfalse
- 3Protonsfalse
- 4Compoundstrue
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Answer : 4. "Compounds"
Explanation :
1. According to Dalton's atomic theory, atoms combine in small whole-number proportions to form compounds.
Q: What is the constant of proportionality of an oscillator if the damping force is directly proportional to the velocity
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63c8e053bdbddb32fda05b2a- 1Kg.s-1true
- 2Kg.m.s-1false
- 3Kg.sfalse
- 4Kg.m.s-2false
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Answer : 1. "Kg.s-1"
Explanation :
The damping force of an oscillating particle is observed to be proportional to velocity. The constant of proportionality can be measured in. kgs−1.
Q: In which year was the Doppler effect discovered by Austrian scientist Christian Doppler, which describes the change in frequency of any kind of sound or light wave produced by a moving source with respect to an observer?
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64b18288568e7ff594a2d3ec- 11846false
- 21844false
- 31842true
- 41840false
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Answer : 3. "1842"
Explanation :
The Doppler effect was discovered by Austrian scientist Christian Doppler in 1842, describing the change in frequency of any type of sound or light wave produced by a moving source with respect to an observer.
Q: How much is polar orbit inclination with the earth's equatorial plane?
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63c7a5d8bdbddb32fd9cc70c- 10 degreesfalse
- 245 degreesfalse
- 390 degreestrue
- 4180 degreesfalse
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