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Physics

Physics
Light travels at the fastest speed in:

water
hydrogen
vacuum
glass

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Physics
The dimension of Planck constant equals to that of

Energy
Power
Angular momentum
Momentum

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Physics
The scientist who first sent electromagnetic waves to distant places is

James Clerk Maxwell
Heinrich Hertz
Thomas Alva Edison
John Logie Baird

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Physics
Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ?

Stratosphere
Ionosphere
Mesosphere
Exosphere

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Physics
Transition ions absorb light in :

Microwave region
Visible region
Infrared region
Ultraviolet region

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Physics
For a ray of light to suffer total internal reflection it has to pass from :

Glass to water
Water to glass
Air to water
Air to glass

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