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Q: A sound wave travels at a speed of 340 m/s. If its wavelength is 2 cm, what is the frequency of the wave?
  • A. 17000Hz
  • B. 170 Hz
  • C. 17000 Hz
  • D. 1700Hz
Correct Answer: Option A - Given, Wavelength (λ) = 2 cm = 0.02 m Velocity (V) = 340 m/s From, V = f x λ 340 = 0.02 x f f = 34000/2 = 17000 Hertz
A. Given, Wavelength (λ) = 2 cm = 0.02 m Velocity (V) = 340 m/s From, V = f x λ 340 = 0.02 x f f = 34000/2 = 17000 Hertz

Explanations:

Given, Wavelength (λ) = 2 cm = 0.02 m Velocity (V) = 340 m/s From, V = f x λ 340 = 0.02 x f f = 34000/2 = 17000 Hertz