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

25.3.2 Doppler Redshift – Check yourself

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1.
The light from a galaxy shows spectral lines at longer wavelengths than in the laboratory. This means the galaxy is:
moving towards us
stationary
moving away from us
hotter than expected
2.
A line of wavelength 400 nm is observed at 404 nm. The speed of the source is:
3.0 × 105 m s−1
1.2 × 106 m s−1
3.0 × 108 m s−1
3.0 × 106 m s−1
3.
The ratio Δλ/λ for a receding source equals:
v/c
c/v
v × c
1 − v/c
4.
For which situation is the equation Δλ/λ ≈ v/c most reliable?
A galaxy receding at 0.9c
A star moving at 1.0 × 105 m s−1
A source at rest
Light travelling through glass
5.
A line is emitted at 600 nm and observed at 594 nm. Which description is correct?
Redshift; the source approaches
Blueshift; the source recedes
Blueshift; the source approaches
Redshift; the source recedes
6.
Two galaxies show the same Δλ/λ. What can be concluded?
They are the same distance away
They have the same temperature
They have the same luminosity
They have the same line-of-sight speed
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