Q.

There is a small air bubble inside a glass sphere (μ=1.5 ) of radius 5 cm. The bubble is at ‘O’ at 7.5cm  below the surface of the glass. The sphere is placed inside water μ=4/3 such that the top surface of glass is 10 cm below the surface of water. The bubble is viewed normally from air. If  the apparent depth of the bubble is D then the value of  27x. The value of x is___

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Detailed Solution

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43ϑ32152=43325ϑ=8cm 10+843=h21h2=13.5cm

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