Question:
A bimetallic strip consists of metals A and B. It is mounted rigidly as shown. The metal $\mathrm{A}$ 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:
$\alpha_{A}>\alpha_{B}$
Length of both strips will decrease
$\Delta \mathrm{L}_{\mathrm{A}}>\Delta \mathrm{L}_{\mathrm{B}}$
