Arrange the following electromagnetic waves in increasing order of their wavelengths.

(A) Visible Light
(B) Microwave
(C) X rays
(D) Infra-red rays

Choose the correct answer from the options given below:

(C), (A), (D), (B)

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

Electromagnetic waves in increasing order of wavelength:

Wavelengths (approximate):

X-rays: $10^{-10} – 10^{-12} m$

Visible light: $4 × 10^{-7} – 7 × 10^{-7} m$

Infra-red: $7 × 10^{-7} – 10^{-3} m$

Microwave: $10^{-3} – 10^{-1} m$

∴ Increasing order of wavelength:

(C) X-rays < (A) Visible Light < (D) Infra-red rays < (B) Microwave