The ozone layer in the Earth's atmosphere is essential for the protection of human life because it...

Electromagnetic waves with wavelengths ranging from $3 \times 10^{-3} \, m$ to $1 \, m$ are used in satellite communication. What is the corresponding frequency range? (Given $c = 3 \times 10^8 \, m/s$)

Write short information regarding electromagnetic waves.

Arrange the following in the ascending order of wavelength :
$(A)$ Gamma rays $(\lambda_1)$
$(B)$ $X$-rays $(\lambda_2)$
$(C)$ Infrared waves $(\lambda_3)$
$(D)$ Microwaves $(\lambda_4)$
Choose the most appropriate answer from the options given below :

Which waves are used for $LASIK$ surgery?

Match List-$I$ (Electromagnetic wave type) with List-$II$ (Its association/application) and select the correct option from the choices given below the lists:

List-$I$	List-$II$
$a$. Infrared waves	$i$. To treat muscular strain
$b$. Radio waves	$ii$. For broadcasting
$c$. $X$-rays	$iii$. To detect fracture of bones
$d$. Ultraviolet rays	$iv$. Absorbed by the ozone layer of the atmosphere