Physics Practice Question and Answer
8 4 Q:
6089295dfd171c780883f3f9 4 Q:
5f72e7d12d9d25248e04a0c2 4 Q:
63a2c8e521b1fe5f1a352faa Answer : 2. "Phon"
4 Q:
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5f6da417ff25c92a085bb0d5 4 Q:
642c1a37dcb650c1457945eb 4 Q:
5f6da4b2ff25c92a085bb8f2 4 Q:
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Q: When a heated electric bulb glows -
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6089295dfd171c780883f3f9- 1Electrical energy is completely converted into light.false
- 2Electrical energy is partly converted into light energy and partly into heat energytrue
- 3Light energy is converted into electrical energy.false
- 4Electric energy is converted into magnetic energy .false
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Answer : 2. "Electrical energy is partly converted into light energy and partly into heat energy "
Q: The air bubble in the water, which will behave like it is
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5f72e7d12d9d25248e04a0c2- 1Convex mirrorfalse
- 2Convex lensfalse
- 3Concave mirrorfalse
- 4Concave lenstrue
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Answer : 4. "Concave lens"
Q: Which of the following is not a unit of heat?
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63a2c8e521b1fe5f1a352faa- 1Caloriefalse
- 2Phontrue
- 3Joulefalse
- 4Kcalfalse
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Answer : 2. "Phon"
Explanation :
The correct answer is Phon. Phon is not a unit of Heat.
Q: In the human eye?
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5fe4599257a5647868b5e752- 1In the human eye?false
- 2convex mirrorfalse
- 3convex lenstrue
- 4concave mirrorfalse
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Answer : 3. "convex lens"
Q: According to the law of reflection of light -
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5f6da417ff25c92a085bb0d5- 1The angle of incidence is greater than the angle of reflectionfalse
- 2The angle of incidence is equal to the angle of reflectiontrue
- 3The angle of incidence is smaller than the angle of reflectionfalse
- 4All the statements are truefalse
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Answer : 2. "The angle of incidence is equal to the angle of reflection"
Q: The splitting of white light into its component colours is called ______.
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642c1a37dcb650c1457945eb- 1refractionfalse
- 2reflectionfalse
- 3scatteringfalse
- 4Dispersiontrue
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Answer : 4. "Dispersion"
Q: Controls the amount of light entering the eye?
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5f6da4b2ff25c92a085bb8f2- 1Iristrue
- 2pupilfalse
- 3lensfalse
- 4side musclesfalse
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Answer : 1. "Iris"
Q: Which is the largest source of energy on earth?
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60b4b317f2c446136b8b6a5c- 1Suntrue
- 2woodfalse
- 3Moonfalse
- 4Coalfalse
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Answer : 1. "Sun"
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