A paperweight in the form of a hemisphere of radius 3 cm is used to hold down a printed
Channel: Doubtnut
Date: 2020-07-26

A paperweight in the form of a hemisphere of radius 3 cm is used to hold down a printed page (plain surface down ).  An observer looks at the page vertically through the paperweight. At what height above the page will the printed letters near the center appear to the observer?