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प्रश्न
What will be the frequency sound having 0.20 m as its wavelength, when it travels with a speed of 331 ms–1?
उत्तर
Speed v = 331 m/s
Let the wave length be λ = 0.2 m
Let the frequency be n
∴ Frequency n = `"v"/"λ"` = `331/0.2` = `3310/2`
∴ Frequency = 1655 Hz
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