Question

please solve this question


dont' spam ✌️✌️✌️

​

Answer 1

Answer:

3)

Explanation:

pls mark as brainlist

Answer 2

$\rm{Young's \: modulus \: (Y)= \dfrac{Stress}{Strain}}$

$\rm{ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ = \dfrac{F/A}{\Delta \: l/l}}$

$\rm{Thermal \: Strain = \dfrac{\Delta \: l}{l} = \alpha \Delta T}$

$\rm{ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ = \dfrac{F}{A(\alpha \Delta T)}}$