If on heating liquid through `80^(@)C`, the mass expelled is `(1/100)^(th)`of mass still remaining , the coefficient of apparent expansion of liquid is

Options

A. `1.25 xx 10^(-4)//^(@)C`
B. `12.5 xx 10^(-4)//^(@)C`
C. `1.25 xx 10^(-5)//^(@)C`
D. None of these

Answer

A

Explanation

`gamma_(app.) = ("Mass expelled")/("Mass remai ned" xx Delta T) `
`=(x//100)/(x xx 80) = 1/8000 = 1.25 xx 10^(-4)//^(@)C`.