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Discussion

Science Preparation for Engineering Entrance
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A concave mirror of radius r is kept on a horizontal table.water of r.i. xis poured into it upto a height H. WHERE SHOULD an object be placed so that its image is form on itself?

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Ankit Gupta

ANSWER IS -r/x.... the focal length of the combination is i/F = -2/fw -2/r.. find out 1/fw ( focal length of the water surface ) and then put the values.. in the above case v=u... on the left side of the mirror ..