Physics Practice Question and Answer
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Q: If the diameter of the capillary is doubled, then the height of the water surface in it rises-
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5f4ca0ae5e74bc4ee54e4187- 1Doublesfalse
- 2It remains halftrue
- 3Not changedfalse
- 4Becomes zerofalse
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Answer : 2. "It remains half"
Q: When water is heated from 0°C to 4°C, its volume:
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5ee0cf998c4c964f73d9946e- 1first increases then decreasesfalse
- 2remains the samefalse
- 3increasesfalse
- 4decreasestrue
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Answer : 4. "decreases"
Q: The depth of the bucket filled with water seems low. this is due to ?
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5f6da70e5256e8407c2e69b1- 1complete internal reflectionfalse
- 2refractiontrue
- 3Reflectionfalse
- 4None of thesefalse
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Answer : 2. "refraction"
Q: Choose the correct statement
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63c910807efeed32fc20e26c- 1A body can be accelerated by frictional forcefalse
- 2There can be zero frictionfalse
- 3Kinetic friction is greater than rolling frictiontrue
- 4Frictional force and area of contact between the two surfaces are proportionalfalse
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Answer : 3. "Kinetic friction is greater than rolling friction "
Q: Principle of fuse is –
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5f1550ae4cff381d16263083- 1Heating effect of electricitytrue
- 2Magnetic effect of electricityfalse
- 3Chemical effect of electricityfalse
- 4Mechanical effect of electricityfalse
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Answer : 1. "Heating effect of electricity "
Q: Alternating current is converted to direct current –
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5efc04d030aa3b4ee606c299- 1By Transformerfalse
- 2By Rectifiertrue
- 3By Dynamofalse
- 4By Motorfalse
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Answer : 2. "By Rectifier"
Q: The Ratio of the total distance is travelled by a body to the total time taken by it is its.
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5f02b102e890ce63e579f6b6- 1Instantaneous velocityfalse
- 2Linear velocityfalse
- 3Average Speedtrue
- 4Accelerationfalse
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Answer : 3. "Average Speed"
Q: Which of the following is false with reference to a photo-voltaic cell?
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6113d437f65c04691bf37c32- 1It can store light energy in the form of electrical energyfalse
- 2It converts electric energy into light energytrue
- 3It is another name as solar cellfalse
- 4It can be used as infra-red detectorsfalse
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Answer : 2. "It converts electric energy into light energy"
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