Question

a copper rod of 15 m long is heated from 35 degree C to 90 degree C . Find out the change in length if its coefficient of linear expansion in 17 * 0.000001 per Kelvin. ( hint : calculate the change in temperature in kelvin)​

Answer 1

Explanation:

Correct option is C)

Δl=αl

o

ΔT

⇒ΔT=

αl

o

Δl

=

1.1×10

−6

×10

1.1×10

−3

=10

T=27

∘

−10

∘

=17

∘

C