Question

Please answer both questions! It's urgent! I'll mark brainliest too!!

Name and define the phenomenon due to which we observe a rainbow.

Explain with a diagram and name the colour of light which bends (i) the most and (ii) the least while passing through a glass prism.

Answer 1

Rainbow formation takes place due to dispersion of light. We observe a rainbow when it is raining along with sun in the sky.

Dispersion refers to the scattering of white light into 7 colours while passing through a prism.

In case of a rainbow, sunlight which is a type of white light enters the raindrops which act as a prism. The sunlight undergoes *total internal refraction* and comes out in form of the seven colours of a rainbow.

Light of greater speeds travel fast and get bent the least. This is why Red bends the least while Violet bends the most.

Hope it helps!