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এক খণ্ড রেডনের 60% ক্ষয় হতে কতদিন লাগবে? রেডনের অর্ধায়ু 4 দিন?

Created: 1 year ago | Updated: 1 year ago

We know, N=N0e-λt 

NN0=e-0.693t12t

40100=e-0.6934×t 

t=5.29 days Ans.

1 year ago

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