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Physics
Physics
Problem
Two radioactive elements
A
A
A
and
B
B
B
(decay constant
=
10
λ
= 10\lambda
=
10
λ
and
λ
\lambda
λ
respectively), initially have the same number of nuclei. The ratio of nuclei of
A
A
A
and
B
B
B
left will be
1
/
e
1/e
1/
e
after time: a.
(
10
λ
)
−
1
(10\lambda)^{-1}
(
10
λ
)
−
1
b.
(
11
λ
)
−
1
(11\lambda)^{-1}
(
11
λ
)
−
1
c.
11
×
(
10
λ
)
−
1
11 \times (10\lambda)^{-1}
11
×
(
10
λ
)
−
1
d.
(
9
λ
)
−
1
(9\lambda)^{-1}
(
9
λ
)
−
1
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