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Class 12
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Nuclei
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Introduction to Radioactivity
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For I^131 , half life is 8 days, the ac
Question
For
I
1
3
1
, half life is 8 days, the activity of an
8
μ
g
sample of I is ?
A
3
.
1
8
×
1
0
1
5
d
a
y
s
−
1
B
3
.
1
8
×
1
0
−
1
5
d
a
y
s
−
1
C
3
.
1
8
×
1
0
1
2
d
a
y
s
−
1
D
3
.
1
8
×
1
0
1
8
d
a
y
s
−
1
Medium
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Updated on : 2022-09-05
Solution
Verified by Toppr
Correct option is A)
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Assertion
Radioactivity of
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undecayed radioactive nuclei of half life of
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Reason
Radioactivity is proportional to half-life.
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