Physics Practice Question and Answer
8 Q: What is the kilowatt hour unit?
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5fe46a8500c5087b4d137b22- 1charge powerfalse
- 2Energytrue
- 3Potential powerfalse
- 4powerfalse
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Answer : 2. "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: The light is a:
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61655a273d260361529b02a7- 1Transverse wavetrue
- 2Longitudinal wavefalse
- 3Bothfalse
- 4Nonefalse
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Answer : 1. "Transverse wave "
Q: The velocity of light in vacuum or air is
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61655d803ee3b5612c8e183f- 1$$3 x 10^8$$ m / sec .true
- 2$$2 x 10^4$$ m / sec .false
- 3$$9 x 10^2$$ m / sec .false
- 4$$3 x 10^11$$ m / sec .false
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Answer : 1. "$$3 x 10^8$$ m / sec . "
Q: The device that converts alternating current to direct current is called
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5f72ea2e2d9d25248e04b7bb- 1inverterfalse
- 2rectifiertrue
- 3transformerfalse
- 4transmitterfalse
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Answer : 2. "rectifier"
Q: Match the columns.
Column - A Column-B
I. Electric current a. Henry
II. Potential difference b. Farad
III. Gapacitance c. Volt
IV. inductance d. Ampere
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649a9c63dad6f2e01f6df4c3- 1i-a, ii-b, iii-c, iv-dfalse
- 2i-b, ii-a, iii-c, iv-dfalse
- 3i-d, ii-c, iii-b, iv-atrue
- 4i-a, ii-c, iii-b, iv-dfalse
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Answer : 3. "i-d, ii-c, iii-b, iv-a"
Explanation :
The columns are a correct match.
I. Electric current - Ampere
II. Potential difference - c. Volt
III. Gapacitance - b. Farad
IV. inductance - a. Henryd.
Q: Which one of the following common devices works on the basis of the principle of mutual induction?
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609399ea402c5862950ea190- 1Tubelightfalse
- 2Transformertrue
- 3Photodiodefalse
- 4LEDfalse
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Answer : 2. "Transformer"
Q: Which set of conditions represents the easiest way to liquefy agas?
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5f2cddb7be9f31290fb7cb5c- 1Low temperature and low pressurefalse
- 2High temperature and high pressurefalse
- 3Low temperature and high pressuretrue
- 4High temperature and low pressurefalse
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