What is the wavelength of a television station which transmits vision on 500 MHz and sound on 505 MHz respectively? Take the speed of electromagnetic wave 3 × 108 ms-1.
Solution
Given
Vision frequency = f1 = 500 MHz = 500 × 106 Hz
Sound frequency = f2 = 505 MHz = 505 × 106 Hz
Speed of EM waves = v = 3 × 108 ms-1
Asked
Vision wavelength = λ1=?
Sound wavelength = λ2 =?
Formula v = fλ
Using the above formula to find the wavelength λ1.
Television wavelength,
To find sound wavelength, λ2
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