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The number of atoms of a radioactive substance of half life t is and N at is equal to the time necessary to Decay from N|2 to N|10 items will be?

The number of atoms of a radioactive substance of half life t is and N at is equal to the time necessary to Decay from N|2 to N|10 items will be?

Grade:12th pass

1 Answers

Norman Manchu
151 Points
6 years ago
Try using the equation-Im using k instead lambda as the decay constant or disintegration constant I made two equations which on dividing give t'=7t|3
N=Noe^{\lambda t}
N|2=Ne^-kt-----(1)
N|10=N|2e^-kt'-----(2)
 
You'd have to take log on both sides to neutralise e as loge^a=a K is constant and will be cancelled out-
 

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