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The eye can be regarded as a single refr...

The eye can be regarded as a single refracting surface is equal to that of cornea (7.8 mm). This surface separates two media of refractive indices 1 and 1.34. Calculate the distance from the refracting surface at which a parallel beam of light will come to focus.

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`mu_(1)=1.00,mu_(2)=1.34,u=-oo,R=0.78cm`
`mu_(2)/v-mu_(1)/u=(mu_(2)-mu_(1))/R`
`(1.34)/v-(1.00)/(-oo)=(1.34-1.00)/(0.78cm)`
`rArrv=3.075cm`
A real image forms in the second medium at a distance of 3.075 cm from the refracting surface.
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