Arrange the following radiations in the decreasing order of their energy
(A) Microwaves
(B) $γ$-rays
(C) AM radio waves
(D) Infrared waves
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (B), (D), (A), (C)
Energy of radiation is given by $E = h \nu = \frac{hc}{\lambda}$
Smaller wavelength → higher frequency → higher energy
Approximate wavelengths/frequencies:
AM radio > Microwaves > Infrared > γ-rays
Decreasing energy order:
γ-rays > Infrared > Microwaves > AM radio waves
(B) > (D) > (A) > (C)