A) 1.40
B) 1.50
C) 3.00
D) 1.33
Correct Answer: C
Solution :
Velocity of light waves in material is |
....(i) |
Refractive index of material is |
(ii) |
where c is speed of light in vacuum or air. |
or ...(iii) |
Given, |
Hence, from Eq. (iii), we get |
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