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General
Easy
Question
A parallel sided block of glass of refractive index 1.5 which is 36 mm thick rests on the floor of a tank which is filled with water (refractive index =4/3 ). The difference between apparent depth of floor at A &B when seen from vertically above is equal to
- 2 mm
- 3 mm
- 4 mm
- none of these
The correct answer is: 3 mm
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