Calculate the effective earth’s radius if the surface refractivity is 301. Options: A . &nbsp6370 km B . &nbsp6370 mi C . &nbsp8493 km D . &nbsp8493 mmi

Calculate the effective earth’s radius if the surface refractivity is 301.

Question

Calculate the effective earth’s radius if the surface refractivity is 301.

Options:

A . 6370 km

B . 6370 mi

C . 8493 km

D . 8493 mmi

Answer: Option C

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