6196. For the manometer set up shown in the figure, the pressure difference PA – PB is given by

by
(ρH – ρair)gH
(ρH – ρL)gH
(ρH – ρL) gH + (ρL – ρair) . g(L – H)
(ρH – ρL) gL + (ρL – ρair)gH
✅ The correct answer is option A.

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