Question 392: Thermodynamics & KTG

Question

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 :

Accepted Answer

Given, $${\alpha _A} > {\alpha _B}$$
$$ 	herefore $$ $$\Delta {L_A} > \Delta {L_B}$$
So, A will contract more than B, so it will bend towards
left.

Answer

Neither bend nor shrink

Answer

Bend towards the left

Answer

Not bend but shrink

Answer

Bend towards the right

Thermodynamics & KTG

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 :

Choose the correct answer: