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5.2.4a Half-life

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Question 19

The half-life of a radioactive isotope is ......1...... for the ......2...... of the isotope to decrease to half of its original value.

Which words correctly complete gaps 1 and 2?

A

1: half of the time taken; 2: proton number

B

1: half of the time taken; 2: activity

C

1: the time taken; 2: proton number

D

1: the time taken; 2: activity

Markscheme

5.2.4a Half-life Questions

  1. IGCSE
  2. /Physics
  3. /5.2.4a Half-life

144 exam-style questions on CIE IGCSE Physics 5.2.4a Half-life. Each one has a worked solution and a mark scheme showing where the marks go.

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