The electromagnetic waves in the range of wavelength from 3 mm to 100 cm are used for the purpose of satellite communication. The range of frequencies corresponding to this range of wavelengths is . (c=3×10⁸ m s⁻¹)

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(2) 300 MHz to 10⁵ MHz. Given: the band runs from λ₁=100 cm=1 m down to λ₂=3 mm=3×10⁻³ m. Idea: 
u=c/λ, so the longest wavelength gives the lowest frequency and the shortest gives the highest. 
u₁=(3×10⁸)/1=3×10⁸ Hz=300 MHz. 
u₂=(3×10⁸)/(3×10⁻³)=10¹¹ Hz=10⁵ MHz. So the band is 300 MHz to 10⁵ MHz, which is the microwave region.

The electromagnetic waves in the range of wavelength from 3 mm to 100 cm are used for the purpose of satellite communication. The range of frequencies corresponding to this range of wavelengths is ______. (c=3×10⁸ m s⁻¹)

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