Modern Physics> The radioactive decay rate of a radioacti...

The radioactive decay rate of a radioactive element is found to be 10³ disintegration / second at a certain time. If the half life of the element is one second, the decay rate after one second is . . . . . . . . and after three second is . . . . . . . . .

Shane Macguire , 10 Years ago

Grade upto college level

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Deepak Patra

Last Activity: 10 Years ago

A = A₀ (1/2)ⁿ where A₀ = Initial activity = 1000 dps (given )

A = Activity after n half lives

At t = 1, n = 1 ∴ A = 1000 (1/2)¹ = 500 dps

At t = 3, n = 3 ∴ A = 1000 ( ½ )³ = 125 dps

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Modern Physics> The radioactive decay rate of a radioacti...

The radioactive decay rate of a radioactive element is found to be 103 disintegration / second at a certain time. If the half life of the element is one second, the decay rate after one second is . . . . . . . . and after three second is . . . . . . . . .

Shane Macguire , 10 Years ago

Deepak Patra

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