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Physics Question on Thermal Expansion

There is some change in length when a 33000 N tensile force is applied on a steel rod of area of cross-section 10−3m210^{-3}m^2. The change of temperature required to produce the same elongation of the steel rod when heated is (Y=3×10−11 N/m2,α=1.1×10−5/0C)(Y=3\times 10^{-11} \,N/m^2 , \alpha = 1.1 \times 10^{-5} /^0C )

A

20∘ C20^{\circ} \,C

B

15∘ C15^{\circ} \,C

C

10∘ C10^{\circ} \,C

D

0∘ C0^{\circ} \,C

Answer

10∘ C10^{\circ} \,C

Explanation

Solution

Answer (c) 10∘ C10^{\circ} \,C