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Geometrical Optics question

2019 · 10 Apr · Shift 2 · Q70
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Geometrical Optics question

2019 · 10 Apr · Shift 2 · Q70

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
The graph shows how the magnification m produced by a thin lens varies with image distance v. What is the focal length of the lens used? JEE Main 2019 (Online) 10th April Evening Slot Physics - Geometrical Optics Question 179 English
  1. A
    b2ac{{{b^2}} \over {ac}}acb2​
  2. B
    b2ca{{{b^2}c} \over a}ab2c​
  3. C
    ac{a \over c}ca​
  4. D
    bc{b \over c}cb​
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