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The graph shows how the magnification m produced by a thin lens varies with image distance v . The focal length of the lens used is

Options

  1. Ab c
  2. Ba c
  3. Cb 2 c a
  4. Db 2 a c

Correct answer

A. b c

Step-by-step solution

For a thin lens, m = 1 - v f From the above equation, slope of the line is 1 f c b = 1 f f = b c

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