Question

An aluminum of length 30m is made into a cone for the temperature range. Find the change in length of the Al sheet.

Answer 1

Answer:

We know that change in length ΔL=LαΔT

ΔT=40−20=20 , L=5m

ΔL=5×α×20

ΔL=5×1.2×10

−5

×20

=1.2×10

−3

=1.2mm