Physics
Grade-10
Easy
Question
Which of the following is not an effect of atmospheric refraction?
- Advance sunrise
- Twinkling of stars
- Formation of a rainbow
- Delayed sunset
Hint:
Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of height.
Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of height.
The correct answer is: Formation of a rainbow
Rainbows are formed by the dispersion of light & reflection (not total internal reflection) from drops of water. The rainbow color sequence can be analyzed by drawing a ray diagram of the refraction of sunlight inside water drops.14
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