Which of the following can be used in cancer treatment?

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$(a)$ Source of microwave frequency	$(i)$ Radioactive decay of nucleus
$(b)$ Source of infrared frequency	$(ii)$ Magnetron
$(c)$ Source of Gamma Rays	$(iii)$ Inner shell electrons
$(d)$ Source of $X$-rays	$(iv)$ Vibration of atoms and molecules
	$(v)$ $LASER$
	$(vi)$ $RC$ circuit

Choose the correct answer from the options given below:

Ozone is found in

Pick out the longest wavelength from the following types of radiations.

The electromagnetic waves of frequency $2 \ MHz$ to $30 \ MHz$ are used in:

The radiation of frequency $1057 \ MHz$ coming from two close energy levels of hydrogen belongs to which part of the electromagnetic spectrum?