need help and explanation for the second question using the first diagram please (5 Points) A...

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$(5 Points) A light ray travels through three parallel slabs having different indices of refraction. Rank the materials accord$

need help and explanation for the second question using the first diagram please

Answer 1

Answer #1

Ans. As light goes from slab 1 to slab 2 ,light bends away from normal therefore the slab 2 is optically rarer than slab 1 ,(n2 < n1) .

Now as light goes from slab 2 to slab 3 it bends towards the normal hence , slab 3 is optically denser than slab 2 (n3 > n2).

As we can see from the ray diagram ,when light goes from slab 1 to slab 2 it bends the most .

Therefore slab 1 is densest and slab 2 is rarest.

So the order is n1 > n3 > n2.

Ans. As slab2 is rarest , so light will travel faster in slab 2.

Answer 2

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