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MCQEasyJEE Main 2025 · 4 April, Shift 1Surface Tension & Capillarity

Physics Question from JEE Main 2025 · 4 April, Shift 1

Two liquids A and B have θA\theta_{\mathrm{A}} and θB\theta_{\mathrm{B}} as contact angles in a capillary tube. If K=cos⁡θA/cos⁡θBK=\cos \theta_{\mathrm{A}} / \cos \theta_{\mathrm{B}}, then identify the correct statement:

  • A

    K is negative, then liquid A and liquid B have convex meniscus.

  • B

    K is negative, then liquid A and liquid B have concave meniscus.

  • C

    K is negative, then liquid A has concave meniscus and liquid B has convex meniscus.

  • D

    K is zero, then liquid A has convex meniscus and liquid B has concave meniscus.

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