A sound note of frequency 250 Hz and a wavelength 1.3 m is produced at a point near a hill. If the echo of the sound is received 1 second later at that point, how far away is the hill from the point?
a
248.7 m
b
261.3 m
c
162.5 m
d
131.3 m
Explanation
Correct Option
cVideo Explanation
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