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Question

A concave mirror of radius R is kept on a horizontal table. Water (refractive index =μ) is poured into it up to a height h. Where should an object be placed so that its image is formed on itself ?


Solution

Let the object be placed at a height 'x' above the surface Of the water.  The apparent position of the object with respect to mirror should be at the centre of curvature so:that the image ie formed at the same position.

Since, Real depthApparent depth=1μ

(with respect to mirror)

Now,   xRh=1μ

x=Rhμ

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