Question

The sound produced by a tuning fork has a wavelenght of 1.7m in air. whatwould be wavelenght in wter if velocity of sound in air is 340 m/s and that is 1400m/s?
a)2m
b)5m
c)7m
d)9m

Answer 1

Explanation:

$speed = wavelength \times frequency$

$frequency = \frac{speed \: in \: air}{wavelength} = \frac{340}{1.7}$

$frequency = 200 \: hz$

Frequency in air = Frequency in water

$wavelength = \frac{speed \: in \: water}{frequency}$

$wavelength = \frac{1400}{200} = 7 \: m$

Therefore, it is your answer .

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