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QJEEM20Ph7cff: JEE Main 2020 Physics - Class 11 JEEM20Ph7cff Solution: Two liquids of densities an ( = 2 ) are filled up behind a…

Two liquids of densities ρ1{\rho _1} an ρ2{\rho _2} ( ρ2{\rho _2} = 2 ρ1{\rho _1} ) are filled up behind a square wall of side 10 m as shown in figure. Each liquid has a height of 5 m. The ratio of the forces due to these liquids exerted on upper part MN to that at the lower part NO is (Assume that the liquids are not mixing) JEE Main 2020 (Online) 8th January Evening Slot Physics - Properties of Matter Question 200 English

Multiple Choice Options

  • A `1/3
  • B `1/2
  • C `1/4
  • D `2/3

Step-by-Step Verified Solution

Force F1 on MN = ρgh2×A{{\rho gh} \over 2} \times A

Force F2 on NO = (ρgh+2ρgh2)×A\left( {\rho gh + {{2\rho gh} \over 2}} \right) \times A

F1F2=14{{{F_1}} \over {{F_2}}} = {1 \over 4}

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