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6.3 Black body radiation

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Question 3

A dimmer switch is used to change the temperature of the filament in a lamp. The table shows the temperature of the filament at two settings.

SettingTemperature of the filament in ∘C^\circ\text{C}∘C
A1700
B2600

Which statement describes the wavelength distribution of the radiation emitted by the filament at setting B, compared with setting A?

[1]
A

At setting B, the distribution has a higher peak intensity and its peak is at a longer wavelength.

B

At setting B, the distribution has a lower peak intensity and its peak is at a longer wavelength.

C

At setting B, the distribution has a higher peak intensity and its peak is at a shorter wavelength.

D

At setting B, the distribution has a lower peak intensity and its peak is at a shorter wavelength.

Markscheme

6.3 Black body radiation Questions

  1. GCSE
  2. /Physics
  3. /6.3 Black body radiation

106 exam-style questions on AQA GCSE Physics 6.3 Black body radiation, covering 6.3.1 Emission and absorption of infrared radiation and 6.3.2 Perfect black bodies and radiation. Each one has a worked solution and a mark scheme showing where the marks go.

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