Question

7. A steel wire is rigidly fixed in an aluminium frame of same length at 30 °C. If the temperature is raised
to 130°C, stress in steel wire is [dal = 23 x 10-6 °C-, as = 11 x 10-6°C-1, Ysteet = 2 x 10" pa]
(A) 1.2 x 10-3
pa
(B) 2.4 x 108 pa (C) 1.6 x 10' pa
(D) 6 x 10-15
pa​

Answer 1

Answer:

25 is the answer of the question