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Physics

Physics
Who gave black hole theory?

Isaac Newton
Stephen Hawking
Albert Einstein
None of these

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Physics
Sun appears red in colour at sunrise and sunset due to

That sun comes out of the mountains
Red light having longer wave length scatters away
That all other colours scatter away except red
The fact that sun emits only red colour at that time

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Physics
In a Laser (say neon laser) all the atoms emit the light waves of

Same phase
All of these
Same frequency
Same amplitude

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Physics
Good conductor of electricity is

Graphite
Dry air
Paper
Kerosene

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Physics
Which phenomenon is responsible for the echo of sound wave?

Polarisation
Interference
Reflection
Refraction

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Physics
Amount of water vapour (gaseous) in a given volume of air (cubic metre) is known as:

Relative humidity
Specific humidity
Mixing ratio
Absolute humidity

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MORE MCQ ON Physics

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