Two wistlesA and B produce notes of frequencies 660 and 596hz eesp. There is a listener at the midpoint of the line joining them. Both the whistle B and the listener start moving with speed 30m/s away from the whistle A. If the speed of sound is 330 no. Of beats hear be lsutener is
Geetha , 6 Years ago
Grade 12
1 Answers
Arun
Last Activity: 6 Years ago
Dear student
For observer note of B will not change due to zero relative motion.
Observed frequency of sound produced by A = 660 * (330 –30)/330 = 600 Hz
hence no. of beats = 600 – 596 = 4
Regards
Arun (askIITians forum expert)
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