Class 10 · ICSE · Physics

Radioactivity

Nuclear structure, alpha, beta and gamma radiation, radioactive decay, and nuclear fission and fusion.

Questions: 13
PYQs: 0
Topics: 2

Syllabus mapping: ICSE syllabus (CISCE)

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Alpha, Beta and Gamma Radiation1 Nuclear Fission and Fusion1

Questions

13 questions in this chapter.

Answer available
Class 10 · Physics · Radioactivity
Name the three kinds of radiation emitted by radioactive substances and state the nature of each.
2 marksEasyShort answer
Answer available
Class 10 · Physics · Radioactivity
A nucleus of atomic number 90 and mass number 234 emits a beta particle. Write the atomic number and mass number of the nucleus formed.
3 marksMediumNumerical
Answer available
Class 10 · Physics · Radioactivity
After three half-lives the fraction of a radioactive sample left undecayed is:
1 markMediumMCQ
Answer available
Class 10 · Physics · Radioactivity
State two harmful effects of exposure to radiation and two safety precautions taken when handling radioactive material.
3 marksMediumShort answer
Answer available
Class 10 · Physics · Radioactivity
Distinguish between nuclear fission and nuclear fusion.
3 marksMediumShort answer
Answer available
Class 10 · Physics · Radioactivity
Define the half-life of a radioactive substance.
2 marksEasyShort answer
Answer available
Class 10 · Physics · Radioactivity
An alpha particle is:
1 markEasyMCQ
Answer available
Class 10 · Physics · Radioactivity
A nucleus of atomic number 92 and mass number 238 emits an alpha particle. Write the atomic number and mass number of the nucleus formed.
3 marksMediumNumerical
Answer available
Class 10 · Physics · Radioactivity
Arrange alpha, beta and gamma radiation in order of increasing penetrating power and of increasing ionising power.
2 marksEasyShort answer
Answer available
Class 10 · Physics · Radioactivity
The half-life of a radioactive substance is 5 years. What fraction of an initial sample remains undecayed after 20 years?
3 marksMediumNumerical
Answer available
Class 10 · Physics · Radioactivity
When a nucleus emits a beta particle, its atomic number:
1 markMediumMCQ
Answer available
Class 10 · Physics · Radioactivity
During beta decay the mass number of the nucleus:
2 marksEasyMCQ

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