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MHT CET 2026 (20 May, Shift 1) · Angle of Contact & Capillarity

Angle of Contact & Capillarity question from MHT CET 2026 (20 May, Shift 1)

Q2MHT CET 2026 · 20 MAY · SHIFT 1Easy

Angle of Contact & Capillarity

Water rises to a height of 2.22.2 cm in glass capillary tube. The height to which water will rise in another capillary having one-fourth area of cross-section as that of the first is.

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Answer: (b)

  1. h∝1rh \propto \frac{1}{r} and area A=πr2A = \pi r^2, so h∝1Ah \propto \frac{1}{\sqrt{A}}.
  2. A′=A4⇒r′=r2⇒h′=2hA' = \frac{A}{4} \Rightarrow r' = \frac{r}{2} \Rightarrow h' = 2h
  3. h′=2×2.2=4.4 cmh' = 2 \times 2.2 = 4.4\text{ cm}
  4. So the answer is (b) 4.4 cm4.4\text{ cm}.
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