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Class 12
Physics
Electromagnetic Waves
a radio can tune in to any station in the 7 5 mhz...

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:

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:

Corresponding wavelength for ν2 can be calculated as:

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

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

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