Question

The coefficient of linear expansion of steel is 0.000011 per degree Celsius. If the temperature changes from 31 degree Celsius to 41 degree Celsius. Find the change in the length of a metal bridge which is 1.5 km long.​

Answer 1

Answer:

Δl=αl

o

​

ΔT

⇒ΔT=

αl

o

​

Δl

​

=

1.1×10

−6

×10

1.1×10

−3

​

=10

T=27

∘

−10

∘

=17

∘

C

Ans.(C)

​

Explanation: