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Saturday, 31 October

JEE Main 2025 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 2 April 2025, Shift 1, Physics Q47

Question 47 of 75 in this shift, Physics question 22 of 25, Section B.

A vessel with square cross-section and height of 6 m is vertically partitioned. A small window of 100 cm2100\ \mathrm{cm}^2 with hinged door is fitted at a depth of 3 m in the partition wall. One part of the vessel is filled completely with water and the other side is filled with the liquid having density 1.5×103 kg/m31.5\times10^3\ \mathrm{kg/m^3}. What force one needs to apply on the hinged door so that it does not get opened ? (Acceleration due to gravity =10 m/s2=10\ \mathrm{m/s^2})

Official answer

150

NTA final key.

Chapter
Mechanical Properties of Fluids
Topic
Fluid Statics
Idea tested
Hydrostatic Thrust on Plane Surfaces

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.