A radioactive material decays by simultaneous emission of two particle – McqOptions

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1.	A radioactive material decays by simultaneous emission of two particles with respective half lives 1620 and 810 years. The time (in years) after which one- fourth of the material remains is [IIT 1995; UPSEAT 2002]
A.	1080
B.	2430
C.	3240
D.	4860
Answer» B. 2430

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