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:
Answer & explanation
Correct answer: option 3
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