Question

8.A bimetallic strip is formed out of two identical strips, one of copper and the other of brass coefficients of linear expansion of the two metals are ac and dp. On heating, the temperature the strip increases by AT and the strip bends to form an are of radius R. Then R is proportional ​

Answer 1

Answer:

inversely proportional to ∆ T

Explanation:

lb = lo(1+ab∆T);

lc = lo (1+ac∆T)

lc=R thita

lb +(R+ d) thita

thus R+d/R= 1+ab∆ T/1+ac∆T

or 1+d/R=1+(ab-ac)∆T