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

25.2.1 Wien’s Displacement Law – Check yourself

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1.
What happens to the peak wavelength of a black body as its temperature rises?
It decreases
It increases
It stays the same
It first increases then decreases
2.
A star has λmax = 580 nm. Using λmaxT = 2.90 × 10−3 m K, its temperature is closest to:
500 K
5000 K
1700 K
50 000 K
3.
Star P is at 4000 K and star Q at 12 000 K. Compare their peak wavelengths.
Q's peak wavelength is three times P's
They are equal
P's peak wavelength is three times Q's
P's peak wavelength is nine times Q's
4.
On an intensity-wavelength graph, how does the curve for a hotter star compare with that of a cooler star?
Higher only at the peak, with the same peak position
Lower everywhere, with a longer peak wavelength
The curves cross at the peak
Higher at every wavelength, with the peak at a shorter wavelength
5.
The peak wavelength of the Sun is about 500 nm. Which statement about a star with peak wavelength 1000 nm is correct?
Its surface temperature is about half that of the Sun
Its surface temperature is about twice that of the Sun
Its surface temperature equals that of the Sun
It is hotter because it emits infrared
6.
Which temperature does Wien's law, applied to starlight, give?
The core temperature
The surface temperature
The average temperature of the whole star
The temperature of interstellar space
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