In a series combination of copper and steel wires of same length and same diameter, a force is applied at one of their ends while the other end is kept fixed. The combined length gets increased by 2cm. The wires will have
A
Same stress and same strain
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Different stress and different strain
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Different stress and same strain
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Same stress and different strain
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is D Same stress and different strain Stress =FA Force(F) is same, A is same. So stress will be same. Strain =ΔLL L is same, but due to different young's modulus, ΔL would be different for copper and steel wire so strain is different . ∵Stress=Y×Strain