JEE PHYSICS MCQ: COMMUNICATION SYSTEMS

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Maximum usable frequency (MUF) in F-region layer is x, when the critical frequency is 60 MHz and the angle of incidence is 70°. Then x is

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Correct option: C

175 MHz

Option D (190 MHz) is incorrect. Option C (175 MHz) is correct because the Maximum Usable Frequency (MUF) is calculated using the formula MUF = fc / cos(θ).

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