MCQOPTIONS
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MCQOPTIONS
| 1. |
Two sources of sound S1 and S2 produce sound waves of same frequency 660 Hz. A listener is moving from source S1 towards S2 with a constant speed ‘u’ m/s and he hears 10 beats\s. The velocity of sound is 330 m/s. Then, ‘u’ equals: |
| A. | 5.5 m/s |
| B. | 15.0 m/s |
| C. | 2.5 m/s |
| D. | 10.0 m/s |
| Answer» D. 10.0 m/s | |