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प्रश्न
Twinkling of stars is due to atmospheric
पर्याय
dispersion of light by water droplets
refraction of light by different layers of varying refractive indices
scattering of light by dust particles
internal reflection of light by clouds
उत्तर
refraction of light by different layers of varying refractive indices
Explanation -
Due to the refraction of light by different layers of varying refractive indices, the apparent position of the source of light keeps on changing.
Due to this, stars appear to twinkle.
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संबंधित प्रश्न
What colours lie on the two sides of the 'green colour' in the spectrum of white light?
What is the order of colours in a rainbow, from the outside to the inside?
Name some everyday objects:
which absorb all the colours in sunlight
State whether the following statements are true or false:
The scattering away of blue light makes the sun appear red at sunset.
Why does the sky appear dark (or black) to an astronaut instead of blue?
Out of blue light and red light, which one is scattered more easily?
The sky appears blue because some of the blue component of sunlight is scattered by:
(a) gas molecules present in air
(b) dust particles present in air
(c) water droplets suspended in air
(d) soot particles present in air
The danger signal is red. Why?
A beam of blue, green, and yellow light passes through the earth's atmosphere. Name the colour which is scattered the least.
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
