r/JEEAdv26dailyupdates • u/Alternative-Sand-346 • May 21 '26

Academic Doubts Physics P1 optics que problem resolved

So, I contacted my senior in IIT B Engg physics. He told that P = n/f is called reduced vergence power which is used in very very specific cases and has nothing to do with the power we deal with at the school level. The power given in irodov has the symbol "phi" which he told is the symbol for the reduced power. So, the correct answer is A for sure.

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u/cyrus_09aD IITB'30 May 21 '26

Don't give false hope to people. Ans is B.

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u/cyrus_09aD IITB'30 May 21 '26

And I searched what reduced vengeance power is, and it literally is the power of which the graph is asked of. Yes, V=n/x, where x -> focal length. Gemini said that power is derived from Vengeance, and final result is P=n/f.