JEE Main 2015 — Mechanical Properties of Fluids Question with Solution
JEE Main 2015 (10 Apr Online)
Question
If two glass plates have water between them and are separated by very small distance (see figure), it is very difficult to pull them apart. It is because the water in between forms cylindrical surface on the side that gives rise to lower pressure in the water in comparison to atmosphere. If the radius of the cylindrical surface is R and surface tension of water is T then the pressure in water between the plates is lower by:
Choose an option
Show full solutionCorrect option: D
Step-by-step explanation
Pressure difference across a liquid surface is
Pressure is more in the concave side hence pressure in water between the plates is lower by
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This is a previous-year question from JEE Main 2015, covering the Mechanical Properties of Fluids chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.