Pradeep Jogsan posted an Question
December 05, 2020 • 05:47 am 30 points
  • IIT JAM
  • Physics (PH)

Solve?????????

50. When sunlight is focused on a paper using a bi-convex lens, it starts to burn in the shortest time if the lens is kept 0.5 m above it. If the radius of curvature of the lens is 0.75 m then, the refractive index of the material is

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    Ruby negi best-answer

    1.75 correct answer..

    cropped-363708139.jpg
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    but this formula is for thin lens

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    not, I don't think.. this is used for all lens.

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    formula se 4-5 times solve kiya tha but ans .nhi aa rha tha🙄 lol mistake..

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    may be u took wrong sign or R .

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    of*

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    no mene sign sb she kiye the

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    I think calculation .....xd😆

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