Curriculum
Course: AS Physics 9702
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Curriculum

AS Physics 9702

1. Physical quantities and kinematics

0/41 Dr Dabour Hub Science Diagram and Course Material

2. Dynamics, forces and pressure

0/46 Dr Dabour Hub Science Diagram and Course Material

3. Work, energy, power and deformation

0/31 Dr Dabour Hub Science Diagram and Course Material

4. Waves and superposition

0/39 Dr Dabour Hub Science Diagram and Course Material

5. Electricity and D.C. circuits

0/49 Dr Dabour Hub Science Diagram and Course Material

7. Circular motion and gravitational fields (A Level)

0/25 Dr Dabour Hub Science Diagram and Course Material

8. Thermal physics (A Level)

0/37 Dr Dabour Hub Science Diagram and Course Material

10. Electric fields and capacitance (A Level)

0/36 Dr Dabour Hub Science Diagram and Course Material

11. Magnetic fields and alternating currents (A Level)

0/46 Dr Dabour Hub Science Diagram and Course Material

12. Quantum and nuclear physics (A Level)

0/44 Dr Dabour Hub Science Diagram and Course Material

13. Medical physics and astronomy (A Level)

0/42 Dr Dabour Hub Science Diagram and Course Material
Quiz

22.4.2 Line Spectra – Check yourself

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1.
Which source produces a line emission spectrum?
Filament lamp
Heated iron bar
Hot low-pressure gas
Sunlight through a prism
2.
A dark line in an absorption spectrum occurs because
atoms absorbed photons of that energy and re-emitted them in random directions
no photons of that wavelength were produced by the source
the atoms were ionised
the grating blocked that wavelength
3.
The wavelength of a line is halved. The energy gap for that transition
halves
stays the same
quadruples
doubles
4.
A grating has d = 2.0 × 10−6 m. What is the angle of the second-order maximum for λ = 600 nm?
17.5°
36.9°
53.1°
90°
5.
The dark lines in the Sun's spectrum are at the same wavelengths as bright lines from laboratory hydrogen. This suggests
the Sun's atmosphere contains hydrogen
the Sun is cooler than hydrogen
hydrogen emits no light
the Sun is a solid
6.
Transitions to which level in hydrogen produce the visible Balmer lines?
n = 1
n = 3
n = 2
n = ∞
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