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6.3 Black body radiation

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Question 25

An infrared telescope detects the radiation emitted by two asteroids.

AsteroidPeak wavelength
K10 micrometres
L18 micrometres

Which conclusion can be made from the peak wavelengths?

[1]
A

Asteroid L is hotter because 18 micrometres is the longer peak wavelength.

B

The temperatures cannot be compared without knowing the emitted intensities.

C

The asteroids have the same temperature because both emit infrared radiation.

D

Asteroid K is hotter because 10 micrometres is the shorter peak 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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