A hemisphere of radius 4 cm is placed centrally oncross mark. When it is viewed directly from above what will be the position of the image for the two following cases: (i) when the plane surface of the hemisphere is in contact with the cross mark, (ii) when the curved surface is in contact with the cross mark?

A hemisphere of radius 4 cm is placed centrally oncross mark. When it

1.	A hemisphere of radius 4 cm is placed centrally oncross mark. When it is viewed directly from above what will be the position of the image for the two following cases: (i) when the plane surface of the hemisphere is in contact with the cross mark, (ii) when the curved surface is in contact with the cross mark?
Answer» ANSWER :(i)4 CM; (II) 2.5 cm

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