The radio waves of frequency $300 \,MHz$ to $3000 \,MHz$ belong to

Which waves are used for $LASIK$ surgery?

If an electron oscillates at a frequency of $1 \, GHz$,it emits:

$A$ bolometer is used to detect ...... .

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

Match the List-$I$ (Phenomenon associated with electromagnetic radiation) with List-$II$ (Part of electromagnetic spectrum) and select the correct code from the choices given below:

List-$I$	List-$II$
$I$. Doublet of sodium	$A$. Visible radiation
$II$. Wavelength corresponding to temperature associated with the isotropic radiation filling all space	$B$. Microwave
$III$. Wavelength emitted by atomic hydrogen in interstellar space	$C$. Short radio wave
$IV$. Wavelength of radiation arising from two close energy levels in hydrogen	$D$. $X$-rays