- The relationship between the velocity (v), frequency (f), and wavelength (λ) of a wave is given by the formula v = fλ. - Given frequency f = 1 kHz = 1000 Hz. - Given wavelength λ = 50 cm = m/s. - Distance to be travelled = 1 km = 1000 m. - Time taken (t) = Distance / Velocity. - t = 1000 m / 500 m/s = 2 seconds.
A sound wave has a frequency of 1 kHz and wavelength 50 cm. How long will it take to travel 1 km?
Asked in UPSC NDA 1 2022 · Topic: Wave Motion (Sound Waves: Properties, Speed of Sound in Different Media, Intensity, Loudness, Pitch)
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