State whether the given statement is true or false.

Stars don't twinkle.

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True

False

answer is B.

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Detailed Solution

The given statement is false.
Concept- The earth's atmosphere functions as a medium, distorting and influencing light from outer space. Light refraction is a phenomenon that occurs when the course of light deviates when it travels through a clear substance with a variable refractive index.
Stars are light sources that are so far away from us that they only appear as points when seen through terrestrial telescopes. The sole characteristic that can be utilised to identify a star's identification (in general) is its intensity.
The intensity of stars changes when they twinkle. This is due to the turbulence in the earth's atmosphere.
The air molecules move in random directions according to Brownian motion. This means that the density of the atmosphere varies during the day. It is always changing.
The refractive index

of a substance is determined by its density and temperature. It is easy to envision that the more molecules there are, the more the light will divert from its initial course.
As a result, when stars are observed through the atmosphere, the light waves emitted are constantly deviated by a slight angle. The magnitude and precise angle are determined by the instantaneous density of the atmosphere. As a result, the intensity fluctuates at random, giving birth to Twinkling.
Hence, the given statement is false.

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