Maximum usable frequency (`MUF`) in `F`-region layer is `x`, when the critical frequency is `60 MHz` and the angle of incidence is `60^(@)`. Then `x` isA. `150 MHz`B. `170 MHz`C. `120 MHz`D. `190 MHz`

Maximum usable frequency (`MUF`) in `F`-region layer is `x`, when the

1.	Maximum usable frequency (`MUF`) in `F`-region layer is `x`, when the critical frequency is `60 MHz` and the angle of incidence is `60^(@)`. Then `x` isA. `150 MHz`B. `170 MHz`C. `120 MHz`D. `190 MHz`
Answer» Correct Answer - C `MUF=(f_(c))/(costheta)`

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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 `60^(@)`. Then `x` isA. `150 MHz`B. `170 MHz`C. `120 MHz`D. `190 MHz`

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