AIEEE 2009 Solved Paper

Section: Physics
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Question : 53 of 89
 
Marks: +1, -0
A transparent solid cylindrical rod has a refractive index of ‌
2
√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 θ for which the light ray grazes along the wall of the rod is :
[AIEEE 2009]
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