Consider a linear object of height $h$ placed in front of a convex lens of focal length $f$ which gives rise to an image of height $h_1=4.00$ cm on the screen placed at a distance $l=10.00 \mathrm{~cm}$ from the object. Then the lens is shifted towards the screen by a distance $d=6.00$ cm and again an image of height $h_2=9.00 \mathrm{~cm}$ is observed on the same screen. The ratio of the height to the focal length $h / f$ is

• A

  $3.00$
• Correct answer
  B

  $3.75$
• C

  $4.00$
• D

  $4.50$

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