Question

The Linear expansion coefficient is the change in _________ of a rod of unit length when its temperature is increased by 1 degree.​

Answer 1

Answer:

Since α increases linearly, we can take the α

eq

as average of α

1

and α

2

.

α

eq

=

2

α

1

+α

2

Δl=l

0

α

eq

Δθ=l(

2

α

1

+α

2

)×10=5l(α

1

+α

2

) since Δθ=10

0