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6.2 Uses and hazards

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Question 4
F

A hospital stores four radioactive isotopes. The table shows the half-life of each isotope.

Table

IsotopeHalf-life
W8 days8\ \text{days}8 days
X6 hours6\ \text{hours}6 hours
Y30 years30\ \text{years}30 years
Z2.7 days2.7\ \text{days}2.7 days

The activity of which isotope falls to half of its starting value in the shortest time?

[1]
A

Isotope W

B

Isotope X

C

Isotope Y

D

Isotope Z

Markscheme

6.2 Uses and hazards Questions

  1. GCSE
  2. /Physics
  3. /6.2 Uses and hazards

48 exam-style questions on OCR GCSE Physics 6.2 Uses and hazards, covering 6.2.1 Contamination and irradiation, 6.2.2 Half-life and radiation hazards, 6.2.3 Medical uses of nuclear radiation, 6.2.4 Nuclear fission and chain reactions, and 6.2.5 Nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.

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