JEE Main 8 April 2017 Paper Solved Paper

Section: Physics

Question : 9 of 90

Marks: +1, -0

A compressive force, F is applied at the two ends of a long thin steel rod. It is heated, simultaneously, such that its temperature increases by ∆T. The net change in its length is zero. Let l be the length of the rod, A its area of cross-section, Y its Young’s modulus, and α its coefficient of linear expansion. Then, F is equal to :

[Main 8 April 2017]

l2Yα∆T
lAYα∆T
AYα∆T
AY
α∆T

Validate

Go to Question:

Prev Question

Next Question