A) the frequency is different
B) the coefficient of elasticity is different
C) the speed is different
D) the amplitude is smaller
Correct Answer: C
Solution :
The refractive index is related to the speed of tight in the two media as given below \[_{1}{{\mu }_{2}}=\frac{\text{speed}\,\,\text{of}\,\,\text{light}\,\,\text{in}\,\,\text{first}\,\,\text{medium}}{\text{speed}\,\,\text{of}\,\,\text{light}\,\,\text{in}\,\,\text{second}\,\,\text{medium}}\] or speed of light in second medium \[=\frac{\text{speed}\,\,\text{of}\,\,\text{light}\,\,\text{in}\,\,\text{first}\,\,\text{medium}}{_{1}{{\mu }_{0}}}\] where \[_{1}{{\mu }_{2}}\] is refractive index of second medium relative to the first medium. Hence, we see that on passing through another medium, speed of light changes due to which it bends.
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