A cubical vessel has opaque walls. An observer (dark circle in figure below) is located…
Physics · JEE Advanced · NTA Exams — Optics
A cubical vessel has opaque walls. An observer (dark circle
in figure below) is located such that she can see only the
wall CD but not the bottom. Nearly to what height should
water be poured so that she can see an object placed at
the bottom at a distance of 10 cm from the corner C ?
(Refractive index of water is 1.33.)
in figure below) is located such that she can see only the
wall CD but not the bottom. Nearly to what height should
water be poured so that she can see an object placed at
the bottom at a distance of 10 cm from the corner C ?
(Refractive index of water is 1.33.)
- 10 cm
- 16 cm
- 45 cm
- 27 cm
Answer
(D) 27 cm
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