Physics Questions Practice Question and Answer
8 4 Q:
60b4b0f6517f2874d53f51b2 4 Q:
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608929c2fd171c780883f502 4 Q:
642c1a37dcb650c1457945eb 4 Q:
62bece2d1d322d793f53ca68 4 Q:
63c8f650be373f6c954abbda Answer : 1. "It is halved"
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Q: What type of energy is used to perform bodily functions?
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60b4b0f6517f2874d53f51b2- 1electric energyfalse
- 2Solar energyfalse
- 3muscle energytrue
- 4Chemical energyfalse
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Answer : 3. "muscle energy"
Q: What does pupil come in bright light?
841 05fe423549f9e9d787c92d003
5fe423549f9e9d787c92d003- 1bigfalse
- 2smalltrue
- 3No changefalse
- 4None of thesefalse
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Answer : 2. "small"
Q: The sum of the change in kinetic and potential energy is always-
836 0608929c2fd171c780883f502
608929c2fd171c780883f502- 1Zerotrue
- 2Positivefalse
- 3Negativefalse
- 4None of the abovefalse
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Answer : 1. "Zero "
Q: The splitting of white light into its component colours is called ______.
835 0642c1a37dcb650c1457945eb
642c1a37dcb650c1457945eb- 1refractionfalse
- 2reflectionfalse
- 3scatteringfalse
- 4Dispersiontrue
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Answer : 4. "Dispersion"
Q: Planetary scientists call the thin gaseous envelope around the Moon as the _______.
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62bece2d1d322d793f53ca68- 1lunar stratospherefalse
- 2lunar exospheretrue
- 3lunar endospherefalse
- 4lunar thermospherefalse
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Answer : 2. "lunar exosphere "
Q: The observer hears a sound from the source which is moving away from the observer who is stationary. Determine the frequency of the sound
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63c8f650be373f6c954abbda- 1It is halvedtrue
- 2It remains the samefalse
- 3It reaches infinityfalse
- 4It gets doubledfalse
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Answer : 1. "It is halved"
Explanation :
If the observer is moving away from the source ((Figure)), the observed frequency can be found: λs=vTo−voTovTs=(v−vo)Tov(1fs)=(v−vo)(1fo)fo=fs(v−vov).
Q: What is the nature of real reflection?
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5f6da372f9079a64e3c04432- 1Reversetrue
- 2straightfalse
- 3upright and upside downfalse
- 4None of thesefalse
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Answer : 1. "Reverse"
Q: What is the direction of torque?
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62ce884231b6d20155334fe4- 1Opposite to the direction of applied forcefalse
- 2Parallel to the radiusfalse
- 3Perpendicular to the direction of applied forcetrue
- 4Same as the direction of applied forcefalse
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