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Question 6407
NEET Physics · Hard

Mechanical Properties of Fluids: Fluid Pressure MCQ

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Fluid PressureHardQuestion 6407

Question

A U-tube manometer has oil (ρ=800) in one arm and water (ρ=1000) in other. Heights: oil 15 cm, water h. For pressure balance:
  1. A
    h = 12 cm
    Correct
  2. B
    h = 15 cm
  3. C
    h = 18.75 cm
  4. D
    h = 20 cm

Correct answer

h = 12 cm

Explanation

ρ_oil×g×0.15 = ρ_water×g×h. 800×0.15 = 1000×h. h = 120/1000 = 0.12 m = 12 cm.

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