Diameter of plano-convex lens is 6 cm and thickness at the centre | Filo
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class 12

Physics

Optics

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Diameter of plano-convex lens is 6 cm and thickness at the centre is 3 mm. If speed of light in material of lens is the focal length of the lens is :

  1. 20 cm
  2. 30 cm
  3. 10 cm
  4. 15 cm
Correct Answer: Option(b)
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