Arrange the following in the decreasing order of their wavelengths.
(A) microwaves
(B) ultraviolet rays
(C) infrared rays
(D) gamma rays
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A), (C), (B), (D)
$\text{Wavelengths of electromagnetic waves (approximate):}$
$\text{Microwaves: } 10^{-3}~\text{m to } 10^{-1}~\text{m}$
$\text{Infrared rays: } 7 \times 10^{-7}~\text{m to } 10^{-3}~\text{m}$
$\text{Ultraviolet rays: } 10^{-8}~\text{m to } 4 \times 10^{-7}~\text{m}$
$\text{Gamma rays: } < 10^{-11}~\text{m}$
$\text{Decreasing order of wavelengths:}$
Microwaves (A) > Infrared rays (C) > Ultraviolet rays (B) > Gamma rays (D)