Nikihi posted an Question
November 10, 2020 • 19:38 pm 30 points
  • IIT JAM
  • Physics (PH)

Why we can't write focal length has a half of its radius of curvature in case of lens..... why we use lens maker formula

why we can't write focal length has a half of its radius of curvature in case of lens..... why we use lens maker formula

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  • Prashant kumar best-answer

    Because it is not always true for all lenses. This is true for only thin double concave and double convex lenses. that is why we use the lenses maker's formula. for thick lenses the focal length of lenses depends also on the thickness of lenses.

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