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6.3 Black body radiation

6.3 Black body radiation

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Question 1

Table 1 shows the lower and upper wavelength limits of infrared radiation blocked by three different optical filters used in thermal imaging.

Table 1

Infrared FilterLower Wavelength LimitUpper Wavelength Limit
Filter A950 nm950\text{ nm}950 nm1950 nm1950\text{ nm}1950 nm
Filter B1.95 μm1.95\ \mu\text{m}1.95 μm3.05 μm3.05\ \mu\text{m}3.05 μm
Filter C3050 nm3050\text{ nm}3050 nm4000 nm4000\text{ nm}4000 nm

Determine which optical filter blocks the largest range of wavelengths of infrared radiation.

To gain full marks, you must show your working by calculating the range of wavelengths blocked by each filter in a consistent unit.

[5]
Markscheme

6.3 Black body radiation Questions

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

4 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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