A radiacative moterial docays by simulataneous emission of two particle from the with respective half - lives `1620` and `810` year . The time , in year , after which one - fourth of the material remins is

A radioactive material decays by simulataneous emission of two particle from the with respective half - lives 1620 and 810 year . The time , in year , after which one - fourth of the material remains is

A radioactive material decays by simultaneous emission of two particle from the with respective half - lives 1620 and 810 year . The time , in year , after which one - fourth of the material remains is

A radioactive material decays by simultaneous emission of two particles of half lives 1620 and 810 years. The time (in years) after which one-fourth of the material remains, is

A radioactive material decays by simultaneous emissions of two particles with half lives of 1400 years and 700 years respectively. What will be the time after the which one third of the material remains ? (Take ln 3 = 1.1)

A radioactive sample decays by simultaneous emission of two particles having respective half-lives of 1,620 years and 810 years. After what time, one fourth of the sample will be left behind?

A radioactive material decays by simultaneous emission of three particles with respective half lives t_(1),t_(2),t_(3) minutes.The time in minutes after which (1)/(3) rd of material remains undecayed is

The mean lives of a radioactive material for alpha and beta radiations are 1620 and 520 years respectively . The material decays simultaneously for alpha and beta radiations. The time after which one fourth of the material remains undecayed in -

A radioactive material is undergoing simultaneous disintegration into two different products with half lives 1400 years and 700 years respectively.Find the time taken by the sample to decay to one third of its initial value .