MHT CET202615 April 2026Evening ShiftPhysicsMechanical Properties of FluidsActual
Three liquids have same surface tension and densities ₁ , ₂ and ₃ ( ₁ < ₂ < ₃ ). In three identical capillaries rise of liquid is same. The corresponding angle of contact ₁ , ₂ and ₃ are related as
Options
- A₁ < ₂ < ₃
- B₁ > ₂ > ₃
- C₁ = ₂ = ₃
- D₁ > ₂ < ₃
Correct answer
B. ₁ > ₂ > ₃
Step-by-step solution
The formula for capillary rise is h = 2T r g . Rearranging the formula, we get = h r g 2T . Since h , r , g , and T are constant for all three liquids, . Given that ₁ For capillary rise, the angle of contact is acute ( 0 Therefore, a smaller value of corresponds to a larger angle , which gives ₁ > ₂ > ₃ . Answer: ₁ > ₂ > ₃