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JEE MAIN - Physics (2021 - 16th March Evening Shift - No. 15)

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
Neither bend nor shrink
Bend towards the left
Not bend but shrink
Bend towards the right

Explication

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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