An electromagnetic radiation has an energy of $14.4 \text{ keV}$. To which region of the electromagnetic spectrum does it belong?

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

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 |

Choose the correct option relating the wavelengths of different parts of the electromagnetic wave spectrum.

In which one of the following regions of the electromagnetic spectrum will the vibrational motion of molecules give rise to absorption?

Write short information regarding electromagnetic waves.