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MHT CET 2026 (13 Apr, Shift 1) · Angle of Contact & Capillarity

Angle of Contact & Capillarity question from MHT CET 2026 (13 Apr, Shift 1)

Q9MHT CET 2026 · 13 APR · SHIFT 1Medium

Angle of Contact & Capillarity

Three liquids have same surface tension and have densities $\rho_1, \rho_2$ and $\rho_3\ (\rho_1 > \rho_2 > \rho_3)$ . In three identical capillaries rise of liquid is same. The corresponding angles of contact $\theta_1, \theta_2$ and $\theta_3$ are related as

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Answer: (b)

Same $h$ , $T$ , $r$ : $\cos\theta \propto \rho$ .
$\rho_1 > \rho_2 > \rho_3 \Rightarrow \cos\theta_1 > \cos\theta_2 > \cos\theta_3$ .
So $\theta_1 < \theta_2 < \theta_3$ ; the answer is (b).

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