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A ray of light passes through 4 transparent media with refractive index n1, n2, n3, n4 as shown in the figure. The surface of all the medias are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have

(a)

n1 = n2

(b)

n2 = n3

(c)

n3 = n4

(d)

n4 = n1



Question ID - 153232 | SaraNextGen Top Answer

A ray of light passes through 4 transparent media with refractive index n1, n2, n3, n4 as shown in the figure. The surface of all the medias are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have

(a)

n1 = n2

(b)

n2 = n3

(c)

n3 = n4

(d)

n4 = n1

1 Answer
127 votes
Answer Key / Explanation : (d) -

n4 = n1

127 votes


127