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NEET 2019 · Pressure in a Fluid

Pressure in a Fluid question from NEET 2019

Q22NEET 2019Medium

Pressure in a Fluid

In a u-tube as shown in the fig. water and oil are in the left side and right side of the tube respectively. The heights from the bottom for water and oil columns are 15 cm and 20 cm respectively. The density of the oil is

[take ρwater=1000 kg/m3\rho_{\text{water}} = 1000\text{ kg/m}^{3}]

Figure

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Answer: (c)

  1. Pressures at the same level in the bottom (both sides open to air) must be equal: ρwghw=ρogho\rho_w g h_w = \rho_o g h_o.
  2. 1000×15=ρo×201000\times15 = \rho_o\times20
  3. ρo=750 kg/m3\rho_o = 750\text{ kg/m}^3
  4. So the answer is (c).
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