Question

The temperature of a wire is doubled. The Young’s modulus of elasticity will

• A. Also double
• B. Become four times
• C. Remain same
• D. Decrease.

Answer 1

Answer: (D)

Decrease.

Answer 2

: as $Y = \frac{FL}{A\Delta L},$ when temperature is doubled, $\Delta L$increases, and accordingly Y decreases.