Which of the following is/are responsible for the formation of Rainbow?

(A) Dispersion of light
(B) Interference of light
(C) Reflection of light
(D) Refraction of light

Choose the correct answer from the options given below:

(A), (C) and (D) only

The correct answer is Option (3) → (A), (C) and (D) only

When sunlight enters a raindrop, it is refracted (bent) at the surface of the drop, causing the light to seperate into the consistent colour.

Inside the raindrop, the seperation of light into different colours (dispersion) because different wavelength of light are refracted in different amount.

The dispersed light is internally reflected inside the raindrop, for a rainbow to form, this reflected plays a critical role in redirecting the light.