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 which one third of the material remains? (Take \(\ln 3=1.1\) )

[JEE Main 2021, 20 Jul (Shift 1)]

Question

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 which one third of the material remains? (Take \(\ln 3=1.1\) )

[JEE Main 2021, 20 Jul (Shift 1)]

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