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Structure Of Atom

Question
CBSEENCH11005238

A certain radiostation broadcasts on a frequency of 920 k Hz. What is the wavelength of electromagnetic radiation broadcast by the radio station?

Solution

 The frequency of radiostation emitted.
v = 920 kHz = 920 x 103 Hz = 920 x 103 s-1

We know, straight v space equals space straight c over straight lambda
or            straight lambda space equals space straight c over straight lambda space equals space fraction numerator 3 space cross times space 10 to the power of 8 space ms to the power of negative 1 end exponent over denominator 920 space cross times space 10 cubed straight s to the power of negative 1 end exponent end fraction
                    equals space 3 over 92 cross times 10 to the power of 4 straight m space equals space 326 space straight m
therefore Wavelength of radiowave broadcast by the station = 326 m