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Physics

Physics
Energy of Ultraviolet rays is great than

Gamma rays
Infrared rays
Cosmic rays
X-rays

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Physics
Which sources produce alternating current (AC)?

Hydro-electric generators
All of these
Solar power plants
Batteries

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Physics
The velocity of sound in moist air is more than in dry air because the moist air has

More pressure than dry air.
Less pressure than dry air.
More density than dry air.
Less density than dry air.

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Physics
The resistance of the human body (dry condition) is of the order of

101 Ohm
103 Ohm
102 Ohm
None of these

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Physics
Two vectors are said to be equal if

Both magnitude and direction are same
Only their directions are same
Only their magnitudes are same
Magnitudes are same but directions are opposite

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Physics
A car parked in the sun with its windows closed gets terribly hot inside. This is due to

The heat emitted by the engine
The greenhouse effect
The good conducting power of the metal body
The double layered wind shield

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