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6)Two tuning forks with natural frequency of 440Hz move relative to a stationary observer. Onetuning fork moves away from the observer andthe other moves towards the observer with thesame speed. If the observer hears beats offrequency 4 Hz and assuming that the velocity ofthe tuning forks is much smaller than the velocityof sound, the speed (in m/s) of the tuning forks is(Take velocity of sound in air is 340 m/s)19111511171113 |
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