When the temperature of a copper coin is raised by $80^{0} C$ , its diameter increases by 0.2%.then which of the following is correct.

percentage rise in the area of a face is 0.4%

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percentage rise in the thickness is 0.4%

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percentage rise in the volume is 0.6%

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coefficient of linear expansion of copper is 0.25 x

10^{- 4} /^{0} C .

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Solution

The correct options are
A percentage rise in the area of a face is 0.4%
C percentage rise in the volume is 0.6%
D coefficient of linear expansion of copper is 0.25 x $10^{- 4} /^{0} C .$

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Q. When the temperature of a copper coin is raised by

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When the temperature of a copper coin is raised by 800C, its diameter increases by 0.2%.then which of the following is correct.

The correct options are A percentage rise in the area of a face is 0.4% C percentage rise in the volume is 0.6% D coefficient of linear expansion of copper is 0.25 x 10−4/0C.

When the temperature of a copper coin is raised by $80^{0} C$ , its diameter increases by 0.2%.then which of the following is correct.

The correct options are
A percentage rise in the area of a face is 0.4%
C percentage rise in the volume is 0.6%
D coefficient of linear expansion of copper is 0.25 x $10^{- 4} /^{0} C .$