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| 1. |
The driver of a car travelling with speed `30ms^-1` towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is `330ms^-1`, the frequency of reflected sound as heard by driver isA. 720 HzB. 555.5 HzC. 550 HzD. 500 Hz |
| Answer» Correct Answer - A | |