JEE Main 2014 Question Paper

Section: Physics

Question : 1 of 90

Marks: +1, -0

The pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length constant when its temperature is raised by 100°C is:
(For steel Young's modulus is 2×1011Nm−2and coefficient of thermal expansion is 1.1×10−5K−1)

[Main 2014]

2.2×107Pa
2.2×106Pa
2.2×108Pa
2.2×109Pa

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