Alpha-Particle Scattering Experiment NEET Questions

Physics - Atoms and Nuclei

Alpha-Particle Scattering Experiment MCQ Questions


13.
The ratio of the size of an atom to the size of its nucleus is approximately:
A.
10² to 10³
B.
10¹⁰ to 10¹²
C.
10⁴ to 10⁵
D.
10⁷ to 10⁸
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ANSWER :
C. 10⁴ to 10⁵
14.
The force responsible for scattering alpha-particles by the nucleus is:
A.
Gravitational force
B.
Magnetic force
C.
Nuclear force
D.
Coulomb's electrostatic force of repulsion
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ANSWER :
D. Coulomb's electrostatic force of repulsion
15.
An alpha-particle is the nucleus of which atom?
A.
Helium
B.
Hydrogen
C.
Lithium
D.
Beryllium
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ANSWER :
A. Helium
16.
The charge on an alpha-particle is:
A.
+e
B.
−e
C.
+2e
D.
−2e
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ANSWER :
C. +2e
17.
The atomic number of gold (used as the target in Geiger-Marsden experiment) is:
A.
47
B.
92
C.
29
D.
79
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ANSWER :
D. 79
18.
The expression for the Coulomb's force between an alpha-particle and a nucleus of atomic number Z at distance r is:
A.
F = (1/4πε₀)(2e)(Ze)/r²
B.
F = (1/4πε₀)(e)(Ze)/r²
C.
F = (1/4πε₀)(2e)(Ze)/r
D.
F = (1/4πε₀)(2e²)(Z)/r³
😑 View Answer Rough Work Error
ANSWER :
A. F = (1/4πε₀)(2e)(Ze)/r²