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| 1. |
A wall is moving with constant velocity `u` towards a fixed source of sound of frequency `f`. The velocity of sound is `v`. The wavelength of the sound reflected by the wall isA. `(v-u)/(v+u). v/f`B. `v/f`C. `(v-u)/f`D. `(v+u)/f` |
| Answer» Correct Answer - A | |