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+1 vote
16.4k views
in Physics by (64.1k points)

A glass slab has the left half of refractive index n1 , and the right half of n2 =3n1 . The effective refractive index of the whole slab is

(a)  n1/2

(b)  2n

(c)  3n1/2

(d)   2n1/3

1 Answer

+1 vote
by (61.3k points)
selected by
 
Best answer

Correct option (c)  3n1/2

Explanation:

Total time taken to travel distance d is :

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