Questions
The wavelength of ultrasonic waves in air is of the order of
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a
5×10−5 cm
b
5×10−8 cm
c
5×105 cm
d
5×108 cm
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Correct option is A
λ=vn ; n≈50,000 Hz, v=330 m/sec⇒λ=33050000 m=6.6×10−5cm≈5×10−5cmSimilar Questions
Velocity of sound in air is
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