The temperature of a wire is doubled. The Young’s modulus of elasticity (a) will also double (b) … times (c) will remain same (d)…
(d) Key concept: Youngs modulus (Y)
It is defined as the ratio of normal stress to longitudinal strain within limit of proportionality.
As Y ∝ 1/ ∆T
When temperature increases ∆T increases, hence Y decreases.