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Physics

Physics
1 Joule is Equal to

10^3 ergs
10^7 ergs
10^6 ergs
10^5 ergs

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Physics
In a water lifting electric pump, we convert

Kinetic energy into Potential energy
Electrical energy into Kinetic energy
Electrical energy into Potential energy
Kinetic energy into Electrical energy

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Physics
How much mechanical work must be done to completely melt 1 gram of ice at 0°C ?

2268 J
80 J
4.2 J
336 J

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Physics
Longitudinal waves cannot travel through

Vacuum
Gas
Liquid
Solid

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Physics
In severe winter, in cold countries water pipes burst because

High atmospheric pressure
Contraction of water pipes
Combined effect of all the above three
Water expands on freezing

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Physics
Dioptre is the unit of

Power of a lens
Focal length of a lens
Sound intensity
Light intensity

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MORE MCQ ON Physics

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