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JEE Main20254 Apr 2025Morning ShiftPhysicsMechanical Properties of FluidsActual

Two liquids A and B have _ A and _ B as contact angles in a capillary tube. If K= _A / _B . then identify the correct statement:

Options

  1. AK is negative, then liquid A and liquid B have convex meniscus.
  2. BK is negative, then liquid A and liquid B have concave meniscus.
  3. CK is negative, then liquid A has concave meniscus and liquid B has convex meniscus
  4. DK is zero, then liquid A has convex meniscus and liquid B has concave meniscus.

Correct answer

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

Step-by-step solution

k = _ A _ B It is negative when _A & _B are of opposite sign. so option (3)

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