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The thin lens formula relating u, v and f is
A1/u - 1/v = 1/f
B1/v + 1/u = 1/f
C1/v - 1/u = 1/f
Du + v = f
Answer & Solution
Correct answer: C. 1/v - 1/u = 1/f
For a thin lens the difference of the reciprocals of image and object distance equals 1/f, unlike the plus sign in the mirror equation.
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