Composition and Size of Nucleus (Atomic Masses, Mass-Energy Relation, Mass Defect...) NEET Questions

Physics - Atoms and Nuclei

Composition and Size of Nucleus (Atomic Masses, Mass-Energy Relation, Mass Defect...) MCQ Questions


13.
The volume of a nucleus is proportional to:
A.
Mass number A
B.
Cube root of A
C.
Square root of A
D.
Mass number squared (A²)
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ANSWER :
A. Mass number A
14.
The density of nuclear matter is approximately:
A.
2.3 × 10¹⁷ kg/m³
B.
2.3 × 10¹⁰ kg/m³
C.
1000 kg/m³
D.
10²⁵ kg/m³
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ANSWER :
A. 2.3 × 10¹⁷ kg/m³
15.
The density of nuclear matter is:
A.
Inversely proportional to A
B.
Approximately constant for all nuclei
C.
Strongly dependent on mass number A
D.
Proportional to atomic number Z
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ANSWER :
B. Approximately constant for all nuclei
16.
1 fermi (1 fm) equals:
A.
10⁻¹² m
B.
10⁻⁹ m
C.
10⁻¹⁰ m
D.
10⁻¹⁵ m
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ANSWER :
D. 10⁻¹⁵ m
17.
If the radius of ¹⁶O nucleus (A = 16) is R₁ and that of ¹²⁸Te (A = 128) is R₂, the ratio R₁/R₂ is:
A.
1 : 16
B.
1 : 8
C.
1 : 2
D.
8 : 1
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ANSWER :
C. 1 : 2
18.
If the radius of ²⁷Al nucleus is 3.6 fm, the radius of ¹²⁵Te nucleus is approximately:
A.
3.6 fm
B.
9.0 fm
C.
5.0 fm
D.
6.0 fm
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ANSWER :
D. 6.0 fm