Question

A brass rod is 1m long at 0°C.find its length at 30°C?(coefficient of linear expansion of brass=1.9x10^-5 k^-1) ​

Answer 1

10^-5

Answer:

it is the answer bro

Answer 2

Answer:

The initial length at 0

0

C is l

1

=1m

Let the length at 30

0

C be l

2

The coefficient of expansion is α=1.9×10

−5

So we have

l

1

l

2

−l

1

=α×△t

⇒l

2

=l

1

+l

1

×α×△t

⇒l

2

=1(1+1.9×10

−5

(30−0))

⇒l

2

=1+0.00057=1.00057

Therefore the correct option is C