Question

the coefficent of superficial expansion of silid is 2×10^5/°c its coefficent of linear expansion is​

Answer 1

Coefficient of given,

Superficial expansion β=20×10  −5  /  0  C

We know that,

6α=3β=2γ

Where α is linear expansion coefficient.

∴6×2×10  −5  =3β

⇒β=2×2×10  −5

 =4×10  −5  /  0  C

​  

 

Hence,

Option A is correct.