A composite rod is made of copper α=1.8×10−5K−1 and steel 1.2×10−5K−1 as shown in figure, is heated up, then it
A
bends with steel on concave side
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
bends with copper on concave side
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
dose not expand
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
data is insufficient
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is Abends with steel on concave side
When a bimetallic strip is heated, it bends with metal of lesser α on inner side, i.e concave side.