Question:
A bimetallic strip consists of metals $\mathrm{A}$ and $\mathrm{B}$. 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 both, it will :
Correct Option: , 4
Solution:
(4)
$\alpha_{\mathrm{A}}>\alpha_{\mathrm{B}}$
Length of both strips will decrease $\Delta \mathrm{L}_{\mathrm{A}}>\Delta \mathrm{L}_{\mathrm{B}}$
