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Byju's Answer
Standard X
Physics
Nuclear Fusion
What is the ...
Question
What is the
α
-activity in disintegration per minute of 1 g sample of
226
Ra
?
(
t
1
/
2
=
1620
y
e
a
r
)
A
2.16
×
10
12
e
v
e
n
t
s
/
m
i
n
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B
2.16
×
10
13
e
v
e
n
t
s
/
m
i
n
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C
4.32
×
10
12
e
v
e
n
t
s
/
m
i
n
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D
1.08
×
10
12
e
v
e
n
t
s
/
m
i
n
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Solution
The correct option is
A
2.16
×
10
12
e
v
e
n
t
s
/
m
i
n
λ
=
0.693
t
1
/
2
=
0.693
1620
=
0.000428
/
y
r
=
0.000428
365
×
24
×
60
/
m
i
n
=
8.14
×
10
−
10
/
m
i
n
−
d
N
d
t
=
n
λ
n
=
1
226
×
6.023
×
10
23
−
d
N
d
t
=
1
226
×
6.023
×
10
23
×
8.14
×
10
−
10
/
m
i
n
=
2.16
×
10
12
e
v
e
n
t
s
/
m
i
n
Suggest Corrections
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