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Question
Solution
Point O is marked on the surface of the glass sphere, and the image of point O is being observed from point P. Let the observed distance of point O is `"d"_"observed"`, then according to the relation of apparent depth,
`"d"_"observed"/mu_"observer" = "d"_"Actual"/(mu_"Object")`
⇒ `"d"_"observed" = mu_"observer" xx "d"_"Actual"/mu_"Object"`
⇒ `"d"_"observed" = 1 xx (20"cm")/1.5 = 40/3 "cm"`
Hence the image of point O will form at`40/3` cm from the point P towards point O. The figure below shows the ray diagram.
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