On entering in a medium from air, the speed of light becomes half of its value in
air. Find the refractive index of that medium with respect to air?
(ii) A glass slab made of a material of refractive index n1 is kept in a medium of
refractive index n2.
A light ray is incident on the slab. Draw the path of the rays of light emerging from
the glass slab, if (i) n1> n2 (ii) n1 = n2 (iii) n1< n2
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Answer: Part One
On entering in a medium from air, the speed of light becomes half of its value in air. Find the refractive index of that medium with respect to air?
Explanation:
Suppose speed of light in Air is= c = 2x
Then the speed of light in the medium will be= v = x
refractive index of the medium will be= n= c/v = 2x/x = 2 Ans
Answer of Part 2
A glass slab made of a material of refractive index n1 is kept in a medium of refractive index n2.
A light ray is incident on the slab. Draw the path of the rays of light emerging from
the glass slab, if (i) n1> n2 (ii) n1 = n2 (iii) n1< n2
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Answer: let the speed of air be x
Then second medium be 2x
2x/x = n (refractive index=n)
Explanation:
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