Expression for effective radius factor k in terms of radius of curvatu – McqOptions

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1.	Expression for effective radius factor k in terms of radius of curvature r_c and radius of earth r_e?
A.	(k= frac{1}{1- frac{r_c}{r_e}} )
B.	(k= frac{1}{1- frac{r_e}{r_c}} )
C.	(k= 1- frac{r_e}{r_c} )
D.	(k= 1- frac{r_c}{r_e} )
Answer» C. (k= 1- frac{r_e}{r_c} )

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