A transparent solid cylindrical rod has a refractive index of $$\frac{2}{\sqrt{3}}$$. It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle $$(\theta )$$ for which the light ray grazes along the wall of the rod is:

Question

TuteeHUB · Accepted Answer

$${{\sin }^{-1}}\left( \frac{1}{2} \right)$$

TuteeHUB · Answer

$${{\sin }^{-1}}\left( \frac{\sqrt{3}}{2} \right)$$

TuteeHUB · Answer

$${{\sin }^{-1}}\left( \frac{2}{\sqrt{3}} \right)$$

TuteeHUB · Answer

$${{\sin }^{-1}}\left( \frac{1}{\sqrt{3}} \right)$$

1.	A transparent solid cylindrical rod has a refractive index of \[\frac{2}{\sqrt{3}}\]. It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle \[(\theta )\] for which the light ray grazes along the wall of the rod is:
A.	\[{{\sin }^{-1}}\left( \frac{\sqrt{3}}{2} \right)\]
B.	\[{{\sin }^{-1}}\left( \frac{2}{\sqrt{3}} \right)\]
C.	\[{{\sin }^{-1}}\left( \frac{1}{\sqrt{3}} \right)\]
D.	\[{{\sin }^{-1}}\left( \frac{1}{2} \right)\]
Answer» D. \[{{\sin }^{-1}}\left( \frac{1}{2} \right)\]

A transparent solid cylindrical rod has a refractive index of \[\frac{2}{\sqrt{3}}\]. It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle \[(\theta )\] for which the light ray grazes along the wall of the rod is:

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