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A small air bubble is situated at a dist...

A small air bubble is situated at a distance of 3 cm from the center of a glass sphere of radius 9 cm. When viewed from the nearest side, the bubble appears to be at a distance of 5 cm from the surface. Its apparent distance when viewed from the farthest side is `nxx5` cm where n is?

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Knowledge Check

  • An air bubble in a glass sphere (mu = 1.5) is situated at a distance 3 cm from a convex surface of diameter 10 cm . At what distance from the surface will the bubble appear ?

    A
    `2.5 cm`
    B
    `-2.5 cm`
    C
    `5 cm`
    D
    `-5 cm`