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JEE Main 2012 Physics question

PhysicsNucleiJEE Main 2012

The decay constants of a radioactive substance for α and β emission are and respectively. If the substance emits α and β simultaneously, then the average half life of the material will be

Answer: (3)

Solution

The decay constants add: , so $Missing argument for \frac\frac1T =

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Question ID VK-103561