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Half life of radium is 1580 years. It re...

Half life of radium is 1580 years. It remains 1/16 after the…..

A

1580 years

B

3160 years

C

4740 years

D

6320 years

Text Solution

Verified by Experts

The correct Answer is:
D
We know that `N = N_0 = (1/2)^2`
Here ,` N= 1/(16) , N_0 = 1` , by putting the values
`1/(16) = 1 xx (1/2)^n therefore n = 4`
We know that` T = t_(1//2) xxn `
`therefore T = 1580 xx 4 = 6320 `years
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