JEE PHYSICS MCQ: NUCLEI

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Application +4 | -1

Two radioactive substances A and B have decay constant

5\lambda \;

and

\lambda

respectively. At t = 0 they have the same number of active nuclei. The ratio of number of active nuclei of A to those of B will be

2\left( {1/{e^2}} \right)

after a time interval

View answer and explanation

Correct option: C

1/2\lambda

Option B (01:03) is correct because the amplitude ratio is the square root of the intensity ratio.

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