Physics · 2019
JEE Main · 10 January 2019, Shift 2 · Q23
The eye can be regarded as a single refracting surface. The radius of curvature of this surface is equal to that of cornea (7.8 mm). This surface…
The eye can be regarded as a single refracting surface. The radius of curvature of this surface is equal to that of cornea ($\displaystyle 7.8$ mm). This surface separates two media of refractive indices $\displaystyle 1$ and 1.34. Calculate the distance from the refracting surface at which a parallel beam of light will come to focus.
Official answer
(3)
3.$\displaystyle 1$ cm
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.