Nuclear Physics
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
The nuclear model of the atom
SubtopicThe nuclear model of the atom under Nuclear Physics for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
In the standard nuclear notation , what does the symbol represent?
A.The number of neutrons
B.The number of protons
C.The total number of nucleons
D.The number of isotopes
- 2.
What does the nucleon number (mass number) of an atom represent?
A.The number of protons in the nucleus
B.The number of neutrons in the nucleus
C.The number of electrons orbiting the nucleus
D.The total number of protons and neutrons in the nucleus
- 3.
Which row in the table correctly identifies the relative charge of the three subatomic particles?
A.Proton: 0, Neutron: +1, Electron: -1
B.Proton: +1, Neutron: 0, Electron: -1
C.Proton: -1, Neutron: 0, Electron: +1
D.Proton: +1, Neutron: -1, Electron: 0
Download the worksheet for Nuclear Physics - The nuclear model of the atom to practice offline. It includes additional chapter-level practice questions.
Radioactivity (Alpha, beta and gamma radiation)
SubtopicRadioactivity (Alpha, beta and gamma radiation) under Nuclear Physics for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
A student measures the background radiation in a lab to be counts per minute. She then places a radioactive source near the Geiger-Müller tube and records a reading of counts per minute. What is the actual count rate of the source alone?
A.180 counts per minute
B.150 counts per minute
C.120 counts per minute
D.5 counts per minute
- 2.
Which type of radiation is an electromagnetic wave and carries no charge?
A.Alpha particle
B.Beta particle
C.Gamma ray
D.Proton beam
- 3.
Which of the following describes the penetration power of gamma () radiation?
A.Stopped by a single sheet of paper
B.Stopped by a few centimeters of air
C.Stopped by a few millimeters of aluminum
D.Reduced only by several centimeters of lead
Download the worksheet for Nuclear Physics - Radioactivity (Alpha, beta and gamma radiation) to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
A Geiger-Müller tube records a background count rate of . When a radioactive source is placed near it, the total count rate is . What is the corrected count rate of the source alone?
A.B.C.D. - 2.
Which statement about the process of radioactive decay is correct?
A.It is a random process and cannot be predicted for a single nucleus.
B.It can be sped up by increasing the temperature of the sample.
C.It only occurs when the substance is in a gaseous state.
D.It depends on the chemical bonds formed by the isotope.
- 3.
A radioactive source contains undecayed nuclei. If the half-life of the substance is days, how many undecayed nuclei will remain after days?
A.B.C.D.
Download the worksheet for Nuclear Physics - Half-life to practice offline. It includes additional chapter-level practice questions.
Safety precautions in radioactivity
SubtopicSafety precautions in radioactivity under Nuclear Physics for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
What is the primary purpose of a film badge worn by workers in the nuclear industry?
A.To protect the skin from alpha radiation
B.To monitor the cumulative dose of radiation received over time
C.To provide identification for restricted areas
D.To neutralize any radiation that hits the worker
- 2.
Where should radioactive isotopes be kept when they are not being used in an experiment?
A.In a lead-lined container in a locked cupboard
B.On an open laboratory bench for easy access
C.In a standard glass beaker
D.In a plastic bag inside a wooden drawer
- 3.
When working with radioactive sources in a laboratory, why is it recommended to use long-handled tongs?
A.To prevent the source from getting dirty
B.To make the source easier to see
C.To increase the distance between the source and the body
D.To stop the source from emitting alpha particles
Download the worksheet for Nuclear Physics - Safety precautions in radioactivity to practice offline. It includes additional chapter-level practice questions.