The following graph depicts the inverse of magnification versus the distance between the object and lens data for a setup. The focal length of the lens used in the setup is

Distance between the object and the lens $\left(\mathrm{m}\right)$

• A

  $250 \mathrm{m}$
• Correct answer
  B

  $0.004 \mathrm{m}$
• C

  $125 \mathrm{m}$
• D

  $0.002 \mathrm{m}$

Hence, the correct answer is option: 'B'.