Published by:
CGP EDU Academic Team
Published on: August 23, 2026
A brass wire of length 2 m and radius 1 mm at 
is held taut between two rigid supports. Initially it was cooled to a temperature of 
creating a tension T in the wire. The temperature to which the wire has to be cooled in order to increase the tension in it to 1.4 T , is 
Text Solution
Verified by ExpertsThe correct answer is:
B
…………... (i)
1.4 T = αYA(27 - θ) ……………... (ii)
using (ii)/(i)
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