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JEE Main Physics Class 12 Ray Optics and Optical Instruments Part 1 Questions

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TOPIC 2 - Refraction of Light at Plane Surface and Total Internal Reflection

An observer can see through a small hole on the side of a jar (radius 15 cm) at a point at height of 15 cm from the bottom (see figure). The hole is at a height of 45 cm. When the jar is filled with a liquid up to a height of 30 cm the same observer can see the edge at the bottom of the jar. If the refractive index of the liquid is N/100, where N is an integer, the value of N is ___________.

[NA Sep. 03, 2020 (I)]

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