Curriculum
Course: AS Physics 9702
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Curriculum

AS Physics 9702

1. Physical quantities and kinematics

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2. Dynamics, forces and pressure

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3. Work, energy, power and deformation

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4. Waves and superposition

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5. Electricity and D.C. circuits

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7. Circular motion and gravitational fields (A Level)

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8. Thermal physics (A Level)

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10. Electric fields and capacitance (A Level)

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11. Magnetic fields and alternating currents (A Level)

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12. Quantum and nuclear physics (A Level)

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13. Medical physics and astronomy (A Level)

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Quiz

22.4.1 Atomic Energy Levels – Check yourself

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1.
Energy levels in hydrogen are negative because
the electron has negative charge
the electron is attracted to the nucleus so energy is below that of a free electron
the atom is cold
photons have negative energy
2.
An electron falls from −1.51 eV to −13.6 eV. The photon energy emitted is
15.1 eV
1.51 eV
−12.1 eV
12.1 eV
3.
A photon of energy 2.0 eV hits an atom with levels separated by 1.5 eV and 3.0 eV. It will
not be absorbed
excite the atom to the 3.0 eV level
be absorbed with 0.5 eV left over
excite the atom to the 1.5 eV level
4.
The ionisation energy of hydrogen is 13.6 eV. What is it in joules? (1 eV = 1.60 × 10−19 J)
2.2 × 10−20 J
8.5 × 1019 J
2.2 × 10−18 J
13.6 J
5.
On an energy level diagram, which transition emits the highest-frequency photon?
The shortest downward arrow
The longest upward arrow
The shortest upward arrow
The longest downward arrow
6.
The levels of an atom get closer together towards the top of the diagram. This means
energy differences between high levels are smaller than between low levels
high-energy photons are easily emitted
the ionisation energy is small
the electron is faster at higher levels
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