Light of wavelength $1 \,nm$ belongs to the following class of waves:

The power of a source is $4 \, kW$. If it produces $10^{20}$ photons in $1 \, s$,then the radiation emitted from this source belongs to which part of the electromagnetic spectrum?

List-$I$	List-$II$
$A$. $UV$ rays	$(i)$ Diagnostic tool in medicine
$B$. $X-$rays	$(ii)$ Water purification
$C$. Microwave	$(iii)$ Communication,Radar
$D$. Infrared wave	$(iv)$ Improving visibility in foggy days

Choose the correct answer from the options given below.

Which of the following is not an electromagnetic wave?

Match List-$I$ (Wavelength range of electromagnetic spectrum) with List-$II$ (Method of production of these waves) and select the correct option from the options given below the lists:

List-$I$	List-$II$
$(1)$ $700\, nm$ to $1\, mm$	$(i)$ Vibration of atoms and molecules
$(2)$ $1\, nm$ to $400\, nm$	$(ii)$ Inner shell electrons in atoms moving from one energy level to a lower level
$(3)$ $< 10^{-3}\, nm$	$(iii)$ Radioactive decay of the nucleus
$(4)$ $1\, mm$ to $0.1\, m$	$(iv)$ Magnetron valve

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