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When do (object distance) is very large, what does the thin lens equation predict for the value of 1/f?Similarly, when do (object distance) is very small and less, what does the thin lens equation predict for the value of 1/f?
Please explain your answer properly, especially for the first question. Thank you

Expert Solution
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Introduction:

A lens is a portion of a transparent medium bounded by two spherical surfaces or one spherical surface and one plane surface.

Explanation:

Thin lens equation is given by,

1v+1u=1f(1)Where, 

So when object distance is very large (i.e.,u (say)) then the above equation boils down to,

1v+1=1f1v+0=1f1v=1f

So the thin lens equation predict value of 1f equals 1v.That is 1f=1v.