MCQ
In a stationary wave, all particles are
- ✓At rest at the same time twice in every period of oscillation
- BAt rest at the same time only once in every period of oscillation
- CNever at rest at the same time
- DNever at rest at all
Hence, Option $A$ is correct.
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| List$-I$ | List$-II$ |
| $UV$ rays | $(i)$ Diagnostic tool in medicine |
| $X-$ rays | $(ii)$ Water purification |
| Microwave | $(iii)$ Communication, Radar |
| Infrared wave | $(iv)$ Improving visibility in foggy days |
Choose the correct answer from the options given below.