QJEEM22Ph0d10: JEE Main 2022 Physics - Class 11 JEEM22Ph0d10 Solution: Two metallic blocks M 1 and M 2 of same area of cross-section…

Question

Verified Solution • 2025–26 Session moderate

QJEEM22Ph0d10: JEE Main 2022 Physics - Class 11 JEEM22Ph0d10 Solution: Two metallic blocks M 1 and M 2 of same area of cross-section…

Two metallic blocks M₁ and M₂ of same area of cross-section are connected to each other (as shown in figure). If the thermal conductivity of M₂ is K then the thermal conductivity of M₁ will be :

[Assume steady state heat conduction]

JEE Main 2022 (Online) 24th June Morning Shift Physics - Heat and Thermodynamics Question 152 English

Multiple Choice Options

A 10 K
B 8 K
C 12.5 K
D 2 K

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank

Browse year-wise authentic previous years' questions with solutions

Authentic CBT Mock Tests

Simulate official exam environment with live timer and percentile scoring

Accepted Answer

Thermal current is same so

$\frac{d Q}{d t} = \frac{Δ T_{1}}{\frac{I_{1}}{K_{1} A}} = \frac{Δ T_{2}}{\frac{I_{2}}{K_{2} A}}$

or $\frac{20}{16} \times K^{'} = \frac{80}{8} \times K$

$\Rightarrow K^{'} = 8 K$

QJEEM22Ph0d10: JEE Main 2022 Physics - Class 11 JEEM22Ph0d10 Solution: Two metallic blocks M 1 and M 2 of same area of cross-section…

Multiple Choice Options

Step-by-Step Verified Solution

Related Learning Resources & Exam Preparation