Alpha-Particle Scattering Experiment NEET Questions

Physics - Atoms and Nuclei

Alpha-Particle Scattering Experiment MCQ Questions


13.
Which fundamental force is responsible for the deflection of alpha particles in Rutherford’s experiment?
A.
Gravitational force
B.
Electromagnetic force
C.
Weak nuclear force
D.
Strong nuclear force
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ANSWER :
B. Electromagnetic force
14.
What was the thickness of the gold foil used in the experiment?
A.
1 mm
B.
100 nm
C.
1 meter
D.
1 μm
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ANSWER :
B. 100 nm
15.
Why was gold chosen as the target in the Rutherford experiment?
A.
Because it is highly reactive
B.
Because it is highly malleable
C.
Because it has high atomic mass
D.
Because it is a good conductor
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ANSWER :
B. Because it is highly malleable
16.
Which observation from Rutherford’s experiment led to the discovery of the atomic nucleus?

NEET - 2018

A.
Most alpha particles passed undeviated
B.
A few alpha particles were deflected at large angles
C.
Alpha particles emitted electrons
D.
All alpha particles got absorbed
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ANSWER :
B. A few alpha particles were deflected at large angles
17.
What charge does an alpha particle carry?
A.
Neutral
B.
Positive
C.
Negative
D.
No charge
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ANSWER :
B. Positive
18.
Which scientist discovered the nucleus based on Rutherford’s experiment?
A.
Ernest Rutherford
B.
Neils Bohr
C.
James Chadwick
D.
J.J. Thomson
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ANSWER :
A. Ernest Rutherford