Kenya KCSE · Physics
Modern physics and atomic structure
8 practice questions, each with the answer and an explanation.
Practise Modern physics and atomic structure now
Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 8 questions
- Which radiation has the greatest penetrating power?
- A radioactive source has a half-life of 4 days. What fraction of a sample remains after 12 days?
- A nucleus of uranium-238 (atomic number 92) emits an alpha particle. What are the mass number and atomic number of the new nucleus?
- In the photoelectric effect, the maximum kinetic energy of the emitted electrons depends on the
- The control rods in a nuclear reactor are made of
- The part of an atom that carries a positive charge is the
- Which of these is used to detect radioactive emissions?
- An X-ray tube operates at 50 kV. How much energy do the electrons gain, in electron-volts?
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