| 1 | IR-Rays | A | 1021 Hz |
| 2 | X-Rays | B | 10 eV |
| 3 | UV-Rays | C | 104 nm |
| 4 | \(\gamma \)-Rays | D | 10-7 cm |
Answer & explanation
Correct answer: option 2
The LHS gives the part of the electromagnetic spectrum and RHS gives its characteristics such as energy, wavelength and frequency.