Question

11. If the volume of block of metal changes by 0.12% when it
is heated through 200C. What is the co-efficient of linear
expansion of the metal? ​

Answer 1

Answer:

2.0×10  −5 /0 C

Explanation:

Since,γ= ΔV /VΔT

⇒γ=  0.12 /100     ×   1 /  20

⇒γ= 6×10 −5  /  0  C

∴α= γ/ 3

⇒α=  6×10 −5 / 3

=2.0×10  −5 / 0  C

is this helpful??