Electromagnetic radiation used to sterilise milk is

Match List-$I$ with List-$II$:

List-$I$ (Electromagnetic waves)	List-$II$ (Wavelength)
$(a)$ $AM$ radio waves	$(i)$ $10^{-10} \, m$
$(b)$ Microwaves	$(ii)$ $10^{2} \, m$
$(c)$ Infrared radiations	$(iii)$ $10^{-2} \, m$
$(d)$ $X$-rays	$(iv)$ $10^{-4} \, m$

Choose the correct answer from the options given below:

Match List-$I$ with List-$II$:

List-$I$ (Electromagnetic wave)	List-$II$ (Production)
$A$. Microwave	$I$. Electrons in atoms emit light when they move from a higher energy level to a lower energy level
$B$. Visible light	$II$. Radioactive decay of nucleus
$C$. Gamma rays	$III$. Vibration of atoms and molecules
$D$. Infra-red rays	$IV$. Klystron valve or magnetron valve

Choose the correct answer from the options given below:

$Ultraviolet$ radiations are used in $LASIK$ surgery.

The wavelengths of short radio waves,$X$-rays,and ultraviolet waves are $\lambda_{1}$,$\lambda_{2}$,and $\lambda_{3}$ respectively. Arrange them in decreasing order.

What is the wavelength range of visible light?