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![A sound wave has a frequency of 2 kHz and wavelength 35 cm. How long will it take to travel 1.5 km ? A sound wave has a frequency of 2 kHz and wavelength 35 cm. How long will it take to travel 1.5 km ?](https://doubtnut-static.s.llnwi.net/static/web-thumb/11759260_web.png)
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