An alarm produces sound of frequency

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

An alarm produces sound of frequency 3.0 kHz3.0\,\text{kHz}. If the speed of sound in air is 330 m/s330\,\text{m/s}, what is the wavelength of this sound in air expressed in centimetres? (a) 1.1 cm1.1\,\text{cm} (b) 11 cm11\,\text{cm} (c) 0.11 cm0.11\,\text{cm} (d) 10 cm10\,\text{cm}

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