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

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1.	Maximum usable frequency (MUF) in F-region layer is x, when the critical frequency is \[60\text{ }MHz\]and the angle of incidence is \[70{}^\circ \]. Then calculate x.
A.	\[122\,MHz\]
B.	\[216\,Hz\]
C.	\[175\,MHz\]
D.	\[75\text{ }Hz\]
Answer» D. \[75\text{ }Hz\]

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