Question

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

Answer 1

It is given that a radio can tune in to any station in the range between ν 1 =7⋅5MHz and

ν 2 =12MHz.

The formula of wavelength of a wave is,

λ 1 = c ν 1

Substitute the values.

λ 1 = 3× 10 8 7⋅5× 10 6 =40m

The formula of wavelength of a wave is,

λ 2 = c ν 2

Substitute the values.

λ 2 = 3× 10 8 12× 10 6 =25 m

Thus, the wavelength band of the radio is 40m to 25m.