Question

find the volume of the sheet if a brass sheet is of 25cm square and 0.4cm thick​

Answer 1

Answer:

Correct option is

B

200.72cm

2

α=18×10

−6

(Given)

β=2α

So, β=36×10

−6

Area = 25×8 = 200 sq cm

A

2

=A

1

(1+βΔT)

So, final area = 200(1+36×10

−6

×100) = 200.72 sq cm