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9.1 , fluid mechanics — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics9.1 , fluid mechanics1 Mark
MCQ
A tank $5 \,m$ high is half filled with water and then is filled to the top with oil of density $0.85 \,g/cm^3$. The pressure at the bottom of the tank, due to these liquids is  ........ $g/cm^2$
  • A
    $1.85$
  • B
    $89.25$
  • ✓
    $462.5$
  • D
    $500$
✓

Answer

Correct option: C.
$462.5$
c
(c) Pressure at the bottom $P = ({h_1}{d_1} + {h_2}{d_2})\frac{g}{{c{m^2}}}$

$ = [250 \times 1 + 250 \times 0.85] = 250\;[1.85]\frac{g}{{c{m^2}}}$

$ = 462.5\frac{g}{{c{m^2}}}$

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