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 :
_16th_March_Evening_Shift_en_15_1.png)
Neither bend nor shrink
Bend towards the left
Not bend but shrink
Bend towards the right
Giải thích
_16th_March_Evening_Shift_en_15_2.png)
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.