Question

Which of the following lights has a wavelength greater than that of blue light?

• A. Red light
• B. Blue light
• C. Both have same wavelenght
• D. Depends on the source of these light

Answer 1

Answer: (A), (C), (D)

The correct options are
A

Red light

C

Both have same wavelenght

D

Depends on the source of these light

White light is a mixture of different colours. Each colour is associated with light of a different wavelength.

The wavelength for various colours are in the order of

$Violet<Blue<Green<Yellow<Orange<Red$

Among red, yellow, orange and blue, blue coloured light has the shortest wavelength.

The wavelength of red light is 1.8 times greater than the wavelength of blue light.