# A Radio Can Tune in to Any Station in the 7.5 MHz to 12 MHz Band. What is the Corresponding Wavelength Band? - Physics

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

#### Solution

A radio can tune to minimum frequency, ν1 = 7.5 MHz= 7.5 × 106 Hz

Maximum frequency, ν2 = 12 MHz = 12 × 106 Hz

Speed of light, c = 3 × 108 m/s

Corresponding wavelength for ν1 can be calculated as:

lambda_1=c/v_1

=(3xx10^8)/(7.5xx10^6)=40m

Corresponding wavelength for ν2 can be calculated as:

lambda_2=c/v_2

=(3xx10^8)/(12xx10^6)=25m

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

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#### APPEARS IN

NCERT Class 12 Physics Textbook
Chapter 8 Electromagnetic Waves
Q 5 | Page 286