The rate of first order reaction is `0.04"mol.L"^(-1).s^(-1)` at 10 seconds and `0.03"mol.L"^(-1)` at 20 seconds after initiation of the reaction . The half-life period of the reaction is -

The rate of a first-order reaction is 0.04 "mol L"^(-1) s^(-1) at 10 seconds and 0.03 "mol L"^(-1) s^(-1) at 20 seconds after initiation of the reaction. The hlaf-life period of the reaction is :

The rate of a first-order reaction is 0.04 "mol L"^(-1) s^(-1) at 10 seconds and 0.03 "mol L"^(-1) s^(-1) at 20 seconds after initiation of the reaction. The hlaf-life period of the reaction is :

The rate of a first-order reaction is 0.04 "mol L"^(-1) s^(-1) at 10 seconds and 0.03 "mol L"^(-1) s^(-1) at 20 seconds after initiation of the reaction. The hlaf-life period of the reaction is :

The rate of a first-order reaction is 0.04 mol L^(-1)s^(-1) at 10 seconds and 0.03 mol L^(-1)s^(-1) at 20 seconds after initiation of the reaction. The half-life period of the reaction is