A solid metallic cube having total surface area 24 m 2 is uniformly heated. If its temperature is increased by 10 ° C , calculate the increase in volume of the cube. (Given α = 5 . 0 × 10 - 4 C ∘ - 1 ).

Question

A solid metallic cube having total surface area 24 m 2 is uniformly heated. If its temperature is increased by 10 ° C , calculate the increase in volume of the cube. (Given α = 5 . 0 × 10 - 4 C ∘ - 1 )., 2 . 4 × 10 6 cm 3, 1 . 2 × 10 5 cm 3, 6 × 10 4 cm 3, 4 . 8 × 10 5 cm 3

MARKS App · Accepted Answer

Total surface area of a cube is 6 a 2 = 24 m 2 ⇒ a 2 = 4 ⇒ a = 2 m Volume of a cube V = a 3 = 8 m 3 Change in volume is given by, Δ V = V 0 γ Δ T , where γ = 3 α Δ V = 8 × 1 . 5 × 10 - 4 × 10 m 3 ⇒ Δ V = 1 . 2 × 10 5 cm 3

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