Physics
Energy in reflected light :

Decreases with the increase in angle of incidence
Increases with the increase in angle
Does not depends on the angle of incidence
Becomes maximum for angle of incidence equal to 45°

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Physics
Stars twinkle because

the refractive index of the different layers of the earth's atmosphere ch
None of these
the distance of the stars from the earth changes with time.
the intensity of light emitted by them changes with time.

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Physics
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?

Jet streams are typically continuous over long distances.
It is narrow band of high-velocity wind.
In summer, the polar front jet achieves its maximum force.
It follows the wave path near the tropopause at elevations of 8 km to 15 km.

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