1. In the nucleus of uranium, the number of neutrons will be
A. 92
B. 235
C. 143
D. Different for different isotopes
✅ The correct answer is option D.
Nuclear Physics MCQs
2. During fusion of hydrogen into helium
A. Energy is absorbed
B. Energy is released
C. Mass is increased due to energy absorption
D. Mass is reduced due to the energy released
✅ The correct answer is option B.
3. One AMU is equal to
A. 1.66 x 10-27kg
B. 166 x 10-15ng
C. 166 x 10-20g
D. All of above
✅ The correct answer is option D.
4. According to which one of following law the density of atom is uniform?
A. J.J.Thomson model
B. Rutherfords model
C. Bohrs model
D. All of the above laws contradict the statement
✅ The correct answer is option A.
5. For chain reaction to build up the size of the radioactive target should be
A. Greater than the critical size
B. Less than the critical size
C. Equal to the critical size
D. All of above can build up a change reaction
✅ The correct answer is option A.
6. Antimatter consists of
A. Antiproton
B. Antineutron
C. Positron
D. All of above
✅ The correct answer is option D.
7. Neutron and proton are commonly known as
A. Nucleon
B. Meson
C. Boson
D. Quartz
✅ The correct answer is option A.
8. The half-life of radium is 1590 years. In how many years shall the earth loss all its radium due to radioactive decay?
A. 1590×106 years
B. 1590×1012 years
C. 1590×1024 years
D. Never
✅ The correct answer is option D.
9. Which one of the following radiation possesses maximum penetrating power?
A. X-rays
B. B-rays
C. γ-rays
D. All have the equal penetrating power
✅ The correct answer is option C.
10. Electrons
A. Can exist inside the nucleus
B. Cannot exist inside the nucleus
C. Can exist both inside and outside the nucleus
D. Do not know
✅ The correct answer is option D.