Show that the coefficeint of area expansions `(Delta A//A)//Delta T` of a rantangular sheet of the solid is twice its linear expansitivity `alpha`.

Show that the coefficient of area expansions (Delta A//A)//Delta T of a rectangular sheet of the solid is twice its linear expansivity alpha .

Show that the coefficient of area expansion , (Delta A//A)//Delta T , of a rectangular sheet of the solid is twice its linear expansivity , alpha_(1) .

Show that the coefficient of area expansion , (Delta A//A)//Delta T , of a rectangular sheet of the solid is twice its linear expansivity , alpha_(1) .

Show that the coefficient of area expansions, (DeltaA//A)//DeltaT , of a rectangular sheet of the solid is twice its linear expansively, alpha_(l).(alpha_(l)=10^(-5)K^(-1))

Show that the coefficient of superficial expansion of a rectangular sheet of the solid is twice its coefficient of linear expansion.

Show that the co-efficient of area expansion of a rectangular sheet is twice its linear expansivity.

Assertion : When a solid iron ball is heated, percentage increase is its volume is largest. Reason : Coefficient of superficial expansion is twice that of linear expansion where as coefficient of volume expansion is three time of linear expansion.