Question

Which phenomenon of light is behind the rainbow?​

Answer 1

Answer:

The phenomenon of light that we can see in the formation of rainbow is reflection, refraction and dispersion of light in the water droplets and it result in the formation of spectrum......

Answer 2

$\huge\mathtt\red{Answer:-}$

Due to the dispersion of sunlight by the water drops in the atmosphere, rainbow is formed.

This is a phenomena due to combined effect of dispersion, refraction, and reflection of sunlight by spherical water droplets of rain.

Conditions for the formation of rainbow :-

The Sun should be shining in one part of the sky( say near Western horizon) while it is raining in the opposite part of the sky(say eastern horizon). An observer can therefore see the rainbow only when his back is towards the sun.

More about rainbow formation:-

During rainbow formation, the sunlight is first refracted as it enters a raindrop, which causes the different wavelengths (colours) of white light to separate. Longer wavelength of light (red) are bent the least while the shorter wavelength (violet) are bent the most. Next, these component rays strike the inner surface of the water drops and get internally reflected if the angle between the refracted ray and normal to the drop surface is greater than the critical angle.

The reflected light is refracted again as it comes out of the drop. It is found that the violet light emerges at an angle of 40° related to the incoming sunlight and red light emerges at an angle of 42°. So, this is the process of rainbow formation.

Rainbows are so beautiful natural phenomenas. They have seven colours band in it which is same as VIBGYOR.