Question

In a temperature of 15 ° C an iron rod has a length of 5 meters. What will its length be when the temperature increases to 25 ° C? Its linear coefficient α = 11.7 x 10-6 / ° C

Answer 1

SOLUTION::

T1= 150 C = Initial temperature

T2 = 25 0 C = final temperature

Iron  coefficient α = 11.7 x 10-6 / ° C

L1 = 5 m

Lets = increasing length of iron when temperature is 150 C to 250 C

We know that

the length increasing is =

now the new length is =

SO the length is = when temperature is TO

ANSWER =