A) \[1.21\]
B) \[130\]
C) \[1.36\]
D) \[1.42\]
Correct Answer: C
Solution :
\[\sin \,{{i}_{c}}=\frac{r}{\sqrt{{{r}^{2}}+{{h}^{2}}}}\] \[\Rightarrow \,\,\frac{{{n}_{l}}}{{{n}_{B}}}=\frac{r}{\sqrt{{{r}^{2}}+{{h}^{2}}}}\times 2.72\] \[\Rightarrow \,{{n}_{l}}=\frac{r}{\sqrt{{{r}^{2}}+{{h}^{2}}}}\times 2.72=\frac{5.77}{11.54}\times 2.72=1.36\]You need to login to perform this action.
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