Question

If the metal coefficient of cubical expansion 7.2e-6 / C. What will be its coefficient of superficial expansion?

Answer 1

We know that three coefficients of expansion linear (`alpha`),superficial (`beta`)and cubical (`gamma`) are related as follows

(`alpha=beta/2=gamma/3`)

`=>beta=(2gamma)/3=2/3xx7.2xx20^(-6)"/"^@C`
`=4.8xx10^(-6)"/"^@C`