A broadcasting station transmits waves of frequency 71 × 104 Hz. with a speed of 3 × 108 m/s. The wavelength of the wave is :

Foundation

Physics Foundation

Sound

Question

A broadcasting station transmits waves of frequency 71 × 10⁴ Hz. with a speed of 3 × 108 m/s. The wavelength of the wave is :

324.6 m

208.4 m

422.5 m

418.8m

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Given : n = 71 × 10⁴ Hz , v = 3 × 10⁸ m/s
$v = nλ \Rightarrow λ = \frac{v}{n} = \frac{3 \times 10^{8}}{71 \times 10^{4}} = 422 .5 m$

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