The index profile of a core of multimode graded index fiber is given b – McqOptions

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1.	The index profile of a core of multimode graded index fiber is given by?
A.	N (r) = n1 [1 2 (r<sup>2</sup>/a)<sup>2</sup>]<sup>1/2</sup>; r<a
B.	N (r) = n1 [3 2 (r<sup>2</sup>/a)<sup>2</sup>]<sup>1/2</sup>; r<a
C.	N (r) = n1 [5 2 (r<sup>2</sup>/a)<sup>2</sup>]<sup>1/2</sup>; r>a
D.	N (r) = n1 [1 2 (r<sup>2</sup>/a)<sup>2</sup>]<sup>1/2</sup>; r<a
Answer» E.

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