Physics · Mechanical Properties of Matter

JEE Main 2024 — 29 January, Shift 1 — Question 32

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II:

Statement –I: If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in hot water.

Statement –II: If a capillary tube is immersed first in cold water and then in hot water, the height of capillary rise will be smaller in cold water.

In the light of the above statements, choose the most appropriate from the options given below

  1. Option A:

    Both statement I and statement Il are correct.

  2. Option B:

    Statement I is correct and statement Il is incorrect.

    Correct
  3. Option C:

    Statement I is incorrect and statement Il is correct.

  4. Option D:

    Both statements 1 and statements ll are incorrect.

Answer: B

Step-by-step solution

Surface tension will be less as temperature increases h=2 Tcos⁡θρgr\mathrm{h}=\frac{2 \mathrm{~T} \cos \theta}{\rho \mathrm{gr}}

Height of capillary rise will be smaller in hot water and larger in cold water

Answer key and solution verified before publishing.

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Exam
JEE Main 2024
Subject
Physics
Chapter
Mechanical Properties of Matter
Topic
Surface Tension and Surface Energy
Given below are two statements : one is labelled as Statement I and… | JEE Main 2024 PYQ with Solution · DhiX AI