Nuclear Physics (AQA A-Level Physics): Quizzes

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What is the unit of measurement for radioactive activity?

Becquerels (BqBq)

Which material can stop alpha particles?

Paper

What is the approximate value of one atomic mass unit (AMU) in kg?

1.66×10−271.66 \times 10^{-27} kg

What can stop beta particles?

A few millimetres of aluminium

What is half-life?

Time for half the nuclei to decay

How does gamma radiation intensity relate to distance according to the inverse square law?

I∝1d2I \propto \frac{1}{d^2}

What is nuclear fusion?

Joining of two light nuclei

What is the key difference between irradiation and contamination?

Irradiation doesn't make object radioactive

What is the function of control rods in a nuclear reactor?

Regulate the fission rate

What did Rutherford's scattering experiment demonstrate about atomic structure?

Atoms have a small, dense nucleus

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