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Tardigrade
Question
Physics
The radius of R of a nucleus of mass number A can be estimated by the formula R =(1.3 × 10-15) A 1 / 3 m It follows that the mass density of a nucleus is of the order of: ( M text prot. ≅ M text neut. ≃ 1.67 × 10-27 kg )
Q. The radius of
R
of a nucleus of mass number A can be estimated by the formula
R
=
(
1.3
×
1
0
−
15
)
A
1/3
m
It follows that the mass density of a nucleus is of the order of:
(
M
prot.
≅
M
neut.
≃
1.67
×
1
0
−
27
k
g
)
3109
228
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JEE Main 2020
Nuclei
Report Error
A
1
0
24
k
g
m
−
3
16%
B
1
0
3
k
g
m
−
3
16%
C
1
0
17
k
g
m
−
3
53%
D
1
0
10
k
g
m
−
3
15%
Solution:
ρ
nucleus
=
volume
mass
=
(
4/3
)
π
r
0
3
A
A
=
4
π
t
0
3
3
=
2.3
×
1
0
17
k
g
/
m
3