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JEE Advanced 2014 Paper 2

Section: Physics

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Question : 10

Total: 60

A point source S is placed at the bottom of a transparent block of height 10 mm and refractive index 2.72. It is immersed in a lower refractive index liquid as shown in the figure. It is found that the light emerging from the block to the liquid forms a circular bright spot of diameter 11.54 mm on the top of the block. The refractive index of the liquid is

[JEE Adv 2014 P2]

1.21
1.30
1.36
1.42

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