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WorksheetsIB Physics Topic 7 Review
Total questions: 12
Worksheet time: 12mins
The energy levels for an atom are shown to scale. A photon of wavelength λ is emitted because of a transition from E3 to E2. Which transition leads to the emission of a photon of longer wavelength?
A. E4 to E1
B. E4 to E3
C. E3 to E1
D. E2 to E1
A proton, an electron and an alpha particle are at rest. Which particle has the smallest magnitude of ratio of charge to mass and which particle has the largest magnitude of ratio of charge to mass?
A
B
C
D
X is a radioactive nuclide that decays to a stable nuclide. The activity of X falls to 1/16th of its original value in 32 s.What is the half-life of X?
A. 2 s
B. 4 s
C. 8 s
D. 16 s
What is correct about the nature and range of the strong interaction between nuclear particles?
A. It is attractive at all particle separations.
B. It is attractive for particle separations between 0.7 fm and 3 fm.
C. It is repulsive for particle separations greater than 3 fm.
D. It is repulsive at all particle separations.
Which property of a nuclide does not change as a result of beta decay?
A. Nucleon number
B. Neutron number
C. Proton number
D. Charge
(Use the image for the formatted text)
Which of the following atomic energy level transitions corresponds to photons of the shortest wavelength?
A
B
C
D
A radioactive nuclide with atomic number Z undergoes a process of beta-plus (β+) decay. What is the atomic number for the nuclide produced and what is another particle emitted during the decay?
A
B
C
D
The positions of stable nuclei are plotted by neutron number n and proton number p. The graph indicates a dotted line for which n = p. Which graph shows the line of stable nuclides and the shaded region where unstable nuclei emit beta minus (β-) particles?
Three conservation laws in nuclear reactions are
I. conservation of charge
II. conservation of baryon number
III. conservation of lepton number.
The reaction (in the attached image) is proposed.Which conservation laws are violated in the proposed reaction?
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
Which Feynman diagram shows the emission of a photon by a charged antiparticle?
A neutron collides head-on with a stationary atom in the moderator of a nuclear power station. The kinetic energy of the neutron changes as a result. There is also a change in the probability that this neutron can cause nuclear fission.
What are these changes?
A
B
C
D
