Question

Which of the statements below given are true?
A. The wavelength of microwaves is greater than that of $U V$ - rays.
B. The wavelength of $I R-$ rays is lesser than that of $U V-$ rays.
C. The wavelength of microwaves is lesser than that of $I R$ - rays.
D. Gamma rays have shortest wavelength in the Electromagnetic Spectrum.

• A. $A$ and $B$ are true
• B. $C$ and $D$ are true
• C. $A$ and $C$ are true
• D. $A$ and $D$ are true

Answer 1

Answer: (D)

The wavelength order of the given types of waves are given below
Waves Wavelength Range (in meter)
Gamma rays $10^{-14}-10^{-10}$
IR-rays $7 \times 10^{-7}-10^{-3}$
UV-rays $10^{-9}-4 \times 10^{-7}$
Microwave $10^{-4}-10^{0}$
Hence, statements (A) and (D) are correct.