A sound wave of frequency f and wavelength λ travels through the air. It may be assumed that its speed is independent of the frequency. Which graph correctly shows the variation of f with λ?
Correct answer: B. Option B
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
Using the formula V = Fλ F = V/λ (V is constant) F ∝ 1/ λ Both have an inverse relation so. will have a curved decreasing gradient.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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