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Physics

Physics
Electric Motor converts ________ energy to mechanical energy

Electrical
Sound
Mechanical
Chemical

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Physics
Which of the following cannot be used for making lenses?

Plastic
Soil
Water
Glass

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Physics
Sound becomes hazardous noise pollution at decibels?

Above 50 db
Above 30 db
Above 80 db
Above 120 db

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Physics
The oldest type of energy known to man is

Solar power
Tidal energy
Wind power
Geothermal energy

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Physics
Addition of suitable impurities into semiconductor, is called

Doping
Forming
Mixing
Diluting

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Physics
Where are mesons found ?

Gamma rays
Laser beam
X-rays
Cosmic rays

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