Write the range of frequencies for radio waves and $FM$ band radio.

Which of the following represents the wavelength range of infrared rays?

If wavelengths of visible rays,microwaves,and $X$-rays are $\lambda_v$,$\lambda_m$,and $\lambda_x$ respectively,then which of the following relations is correct?

The energy of the electromagnetic waves is of the order of $15\, keV$. To which part of the spectrum does it belong?

Match the electromagnetic radiations given in List-$I$ with their uses given in List-$II$.
| List-$I$ | List-$II$ |
| :--- | :--- |
| $A$) $X$-rays | $P$) Remote switches |
| $B$) $UV$-rays | $Q$) Finger prints in forensic labs |
| $C$) Radio waves | $R$) Crystal structure study |
| $D$) $IR$-rays | $S$) $TV$ communication system |

Write short information regarding electromagnetic waves.