Electromagnetic radiation and quantum phenomena (AQA A-Level Physics): Quizzes

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Collisions of electrons with atoms
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What best describes electron energy levels in atoms?

Discrete fixed states

What is excitation?

Electron moves to higher energy level

What occurs when an atom becomes ionised?

Electron leaves atom completely

What is ionisation energy?

Min. energy to remove an electron

What happens when an excited electron returns to its ground state?

It releases a photon

What determines the energy of an emitted photon?

Difference between energy levels

In fluorescent tubes, what do excited mercury atoms emit when returning to ground state?

UV photons

What role does the fluorescent coating play in fluorescent tubes?

Converts UV to visible light

What is 11 electron volt (eVeV)?

Energy gained through 11 V

What is 33 eVeV in joules? (11 eVeV = 1.6×10−191.6 \times 10^{-19} JJ)

4.8×10−194.8 \times 10^{-19} JJ

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