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QJEEM21Phc42b: JEE Main 2021 Physics - Class 11 JEEM21Phc42b Solution: A bimetallic strip consists of metals A and B. It is mounted…

A bimetallic strip consists of metals A and B. It is mounted rigidly as shown. The metal A has higher coefficient of expansion compared to that of metal B. When the bimetallic strip is placed in a cold bath, it will :

JEE Main 2021 (Online) 16th March Evening Shift Physics - Heat and Thermodynamics Question 232 English

Multiple Choice Options

  • A Not bend but shrink
  • B Neither bend nor shrink
  • C Bend towards the left
  • D Bend towards the right

Step-by-Step Verified Solution

JEE Main 2021 (Online) 16th March Evening Shift Physics - Heat and Thermodynamics Question 232 English Explanation

Given, {\alpha _A} > {\alpha _B}

∴\therefore \Delta {L_A} > \Delta {L_B}

So, A will contract more than B, so it will bend towards left.

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