A paperweight in the form of a hemisphere of radius 3.0 cm is used to hold down a printed page. An observer looks at the page vertically through-the paperweight. At what height above the page will the printed letters near the centre appear to the observer ?

A paperweight in the form of a hemisphere of radius 3.0 cm is used to

1.	A paperweight in the form of a hemisphere of radius 3.0 cm is used to hold down a printed page. An observer looks at the page vertically through-the paperweight. At what height above the page will the printed letters near the centre appear to the observer ?
Answer» REFRACTION at A( first SURFACE):μ2=3/2μ1= 1u= 0R= ∞From the formulaμ2/V- μ1/u= μ2-μ1/RV=0since u=o and R=∞Second refraction at B:u=-3cmR=-3cmμ1=3/2μ2=11/v+3/2x3=1-1.5/-3 =1/61/v=1/6-1/2=-1/3V=-3cmThere will not be any shift in the final image

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A paperweight in the form of a hemisphere of radius 3.0 cm is used to hold down a printed page. An observer looks at the page vertically through-the paperweight. At what height above the page will the printed letters near the centre appear to the observer ?

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