Physics · 2025
JEE Main · 4 April 2025, Shift 1 · Q32
Two liquids A and B have θ_A and θ_B as contact angles in a capillary tube. If K= cos θ_A / cos θ_B, then identify the correct statement:
Two liquids A and B have $\displaystyle \theta_A$ and $\displaystyle \theta_B$ as contact angles in a capillary tube. If K= $\displaystyle \cos \theta_A / \cos \theta_B$, then identify the correct statement:
Official answer
From NTA’s final answer key for this paper.
(2)
K is negative, then liquid A has concave meniscus and liquid B has convex meniscus.
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.