Question

A.The wavelength of microwaves is greater than that of $UV-$rays.

B.The wavelength of $IR$ rays is lesser than that of $UV-$rays.

C.The wavelength of microwaves is lesser than that of $IR$ rays.

D. Gamma rays have the shortest wavelength in the electromagnetic spectrum.

Of the above statements

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

Answer 1

The correct option is (C) $A$ and $B$ are true

The wavelength order of the given types of waves is given below-

Waves Wavelength Range (in meter)

Gamma rays ${10}^{-14}to{10}^{-10}$

IR-rays $7\times {10}^{-7}to{10}^{-3}$

UV-rays ${10}^{-9}to4\times {10}^{-7}$

Microwaves ${10}^{-4}to{10}^0$

From the above data, we can say that. The wavelength of microwaves is greater than that UV−rays and The wavelength of IR rays is lesser than that of UV−rays.

Hence, statements (A) and (B) are correct.