Atmospheric Refraction

IMPORTANT

Atmospheric Refraction: Overview

This topic covers concepts, such as Twinkling of Stars, Advanced Sunrise, Delayed Sunset and Apparent Position of the Star.

Important Questions on Atmospheric Refraction

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 1

Which among the following are the phenomena observed on Earth are due to atmospheric refraction of light

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 2

Planets are seen as extended sources that are considered to be a collection of point sources of light. The total variation in the amount of light entering our eyes from them does not average out to be zero, thereby planets twinkle.

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 3

The apparent position of the stars is always_____.

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 4

The star appears slightly higher than its actual position when viewed near the horizon.

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 5

Why do stars twinkle?

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 6

Why don’t the planets twinkle?

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 7

As observed from earth, stars seems to be twinkling, the reason is-

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 8

Due to atmospheric refraction the sun rise is advanced by _____minutes.

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Science>The Human Eye and the Colourful World>Atmospheric Refraction> Q 9

All layers of atmosphere has the same refractive index.