1.

The density of a liquid of coefficient of cubical expansion gamma is d at 0^(@)C. When the liquid is heated to a temperature T, the change in density will be :

Answer»

`(-gamma T d_(0))/((1+gamma T))`
`(gamma T d_(0))/((1+gamma T))`
`((1+gamma T)d_(0))/(gamma T)`
`((1-gamma T)d_(0))/(gamma T)`

SOLUTION :The DENSITY at temperature T is given by
`d_(t) =(d_(0))/(1+gamma T)`
`therefore` Change is density `=d_(e)-d_(0)=(d_(0))/(1+gamma T)-d_(0)`
`=(d_(0)-d_(0)-gamma Td_(0))/(1+gamma T)=(-gamma Td_(0))/(1+gamma T)`
Thus, correct choice is (a).


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