Question

ob The sound waves from a siren oscillate 2000 times in 10 seconds. What will be the waveleng
of such waves (speed of sound in air is 340 ms-1) ?
b) 1.5 m
c) 1.6 m
d) 1.7 m
a) 1.4 m​

Answer 1

Answer:

Answer is 1.6 m

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Answer 2

n=2000

t=10s

$Frequeny= \frac{n}{t} = \frac{2000}{10} = 20o \:Hz$

v= 340 m/s

$Wavelength = \frac{Speed}{Frequency} = \frac{340}{200} = 1.7 \: m$