Question

A steel wire whose length is 130 cm and whose cross-section area is
9.50 x 10-7 m2 is heated to an average temperature of 830°C and
stretched tout between two rigid supports. What tension is developed in
wire when it is cooled to 20°C? (Y = 2 x 1011 N/m2, a = 11 x 10-6 (°C)-?)
1200 N
1700 N
2100 N
Zero
Class 11 physics question:-
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Answer 1

Answer:

1700 N is the answer.

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Answer 2

OPTION 2) 1700N RIGHT ANSWER ❤✅

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