A sound produces 15 crest and 15 troughs in 3 sec. when the second crest is produced the first is 2cm away from the source. find wavelength
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Frequency = 15 Hz
Time period = 1/15
Distance = 3 cm = 0.03m
Speed = Distance/Time
= 0.03×15
= 0.45 m/s
v = Frequency× Wavelength
0.45 = 15×wavelength
Wavelength = 0.03 m
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Time period = 1/15
Distance = 3 cm = 0.03m
Speed = Distance/Time
= 0.03×15
= 0.45 m/s
v = Frequency× Wavelength
0.45 = 15×wavelength
Wavelength = 0.03 m
_____________________
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