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16. The maximum value of the binding energy per nucleon of the atom and the corresponding mass number are
A. 8.5 MeV around A = 20
B. 8.8 MeV around A = 50
C. 8.5 MeV around A = 50
D. 8.8 MeV around A = 20
Explanation:
17. In velocity selector,
A. only electric field is applied
B. only magnetic field is applied
C. Both electric and magnetic fields are applied in a parallel direction
D. both electric and magnetic fields are applied in a perpendicular direction
Explanation:
18. The masses of proton and neutron are 1.007277 amu and 1.008665 amu respectively. If the mass of 1H2 = 2.01473 amu, then its binding energy per nucleon is
A. 0.564 MeV
B. 0.664 MeV
C. 1.128 MeV
D. 1.692 MeV
Explanation:
19. In Bain bridge mass spectrometer, the radius of the curved path of an ion
A. depends only on the charge of the ion
B. is inversely proportional to the specific charge of the ion
C. depends only on the mass of the ion
D. depends only on the applied magnetic field
Explanation:
20. BE/A curve shows that iron nucleus is
A. most stable
B. unstable
C. radio active
D. heavy
Explanation:
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