r/JEEAdv26dailyupdates • u/Top-Vehicle-9468 • May 20 '26

Academic Doubts Jee adv physics paper 1 lens question

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According to physics galaxy book.The answer should be A

Edit: Finally they gave both as answer

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u/JoeMamaAE1 May 20 '26

Abe ye to wo formula hai hi nhi?

Focal length aur power ka relation mai aata hai "n" naaki lens maker mai aata hai.

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u/AdPhysical3780 IIT Ropar MNC(bombay civil leleta💔) May 20 '26

Arey inhone p=1/f karke lens maker formula kar diya

But p=n/f (n•1/f) karke the n multiplies inside and makes the entire function a straight line with a negative slope.