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9.1 , fluid mechanics — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics9.1 , fluid mechanics1 Mark
MCQ
A tube is bent into $L$ shape and kept in a vertical plane. If these three liquids are kept in equilibrium by the piston of area $A$ , the value of $\frac {F}{A}$ is
  • A
    $({\rho _1}{h_1} + {\rho _2}{h_2} + {\rho _3}{h_3})g$
  • B
    $({\rho _1}{h_1} + {\rho _2}{l_2} + {\rho _3}{h_3})g$
  • ✓
    $({\rho _2}{h_2} + {\rho _3}{h_3})g$
  • D
    $({\rho _2}{l_2} + {\rho _3}{h_3})g$
✓

Answer

Correct option: C.
$({\rho _2}{h_2} + {\rho _3}{h_3})g$
c

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