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A rectangular metal block of volume 10-6m3

A rectangular metal block of volume 10-6m3 at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10-5k-1, the percentage change of it volume is

A.

1.5%

B.

1.1%

C.

0.4%

D.

0.1%

Correct answer is B

Y = ΔVV×Δθ

3 x 10-5 x 1.2 = Δ V106× (573273)

ΔV = 1080 x 10-11m3

%ΔV = 1080× 10106 x 100

= 1.08%

= 1.1%