An aluminium sphere of 20 cm diameter is heated from ""^(@)C" to "100^(@)C. Its volume changes by (given that coefficient of linear expansion for aluminium alpha _(Al)= 23 xx 10^(6)//^(@)C).

An aluminium sphere of 20 cm diameter is heated from ""^(@)C" to "100^

1.	An aluminium sphere of 20 cm diameter is heated from ""^(@)C" to "100^(@)C. Its volume changes by (given that coefficient of linear expansion for aluminium alpha _(Al)= 23 xx 10^(6)//^(@)C).
Answer» `2.89 CC` `9.28 cc` `49.8 cc` `28.9 cc` Solution :`Delta V =V_(0)(3 alpha)Delta T =(4)/(3) PI (10)^(3)xx3xx23xx10^(-6)XX100` `Delta V=28.9 cc.` Correct choice : (d).

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An aluminium sphere of 20 cm diameter is heated from ""^(@)C" to "100^(@)C. Its volume changes by (given that coefficient of linear expansion for aluminium alpha _(Al)= 23 xx 10^(6)//^(@)C).

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