Question

The coefficient of linear expansion of a rod of a material is 12 x 10-6°C, find its coefficient of areal expansion ​

Answer 1

Answer:

Coefficient of thermal expansion = Change in length / (original length X change in temperature)

So, α

c

/α

F

= Change in temp in Fahrenheit / change in temp in centigrade

Or α

F

=α

C

(change in T

C

/change in T

F

)

= α

C

(change in T

C

/(9/5)change in T

C

)

= α

C

×(5/9)

= (20/3)×10

−6