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  2. A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?
# NCERT

5. A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?

Answers (1)
S Sayak

Frequency range = 7.5 MHz to 12 MHz

Speed of light = 3\times 10^{8}ms^{-1}

Wavelength corresponding to the frequency of 7.5 MHz =

\frac{3\times 10^{8}ms^{-1}}{7.5\times 10^{6}Hz}

=40m

Wavelength corresponding to the frequency of 12 MHz =

\frac{3\times 10^{8}ms^{-1}}{12\times 10^{6}Hz}

=25m

The corresponding wavelength band is 25m to 40m.

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