Physics Questions Practice Question and Answer
8 Q: Find the molecular mass of a gas that takes three times more time to effuse as compared to He with the same volume
524 063c8f8598731ac33279f04bb
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: What is the constant of proportionality of an oscillator if the damping force is directly proportional to the velocity
483 063c8e053bdbddb32fda05b2a
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: Which among the following instruments is used to measure either direct or alternating electric current?
481 064b17cd02dc867f593e95d61
64b17cd02dc867f593e95d61- 1Wattmeterfalse
- 2Hygrometerfalse
- 3Ammetertrue
- 4Pyrometerfalse
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Answer : 3. "Ammeter"
Explanation :
1. The device which is used to measure electric current in an electric circuit is called ammeter.
2. The resistance of an ideal ammeter is always zero and the electric circuit is always connected in series.
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?
478 064b18288568e7ff594a2d3ec
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?
477 063c7a5d8bdbddb32fd9cc70c
63c7a5d8bdbddb32fd9cc70c- 10 degreesfalse
- 245 degreesfalse
- 390 degreestrue
- 4180 degreesfalse
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Answer : 3. "90 degrees"
Q: According to Dalton’s atomic theory, atoms combine in the ratio of small whole numbers to form ______.
473 064919f9ec7d7c7e0670d10b8
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 ratio of power dissipated if two electric bulbs are connected in series and the ratio of their resistance is 1:2?
472 063c8d8afbd6d90332091d175
63c8d8afbd6d90332091d175- 11:4false
- 21:2true
- 32:1false
- 41:1false
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Answer : 2. "1:2"
Q: What happens to the force acting between the charged particles, if the distance between these charged particles is halved?
449 063c8e92bbdbddb32fda08d59
63c8e92bbdbddb32fda08d59- 1It increases by four timestrue
- 2It gets doubledfalse
- 3It becomes halffalse
- 4It reduces by one-fourthfalse
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Answer : 1. "It increases by four times "
Explanation :
So, when the distance between the two charges is halved, the force is increased four times.