Thermal radiation and energy balance

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Question 3
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An engineer measures the thermal radiation emitted by a new ceramic heating element at a constant temperature.

The graph in Figure 1 shows how the relative intensity of the emitted radiation varies with its wavelength.

A line graph showing the relative intensity of thermal radiation emitted by a ceramic heating element against wavelength. The x-axis is labeled 'Wavelength in micrometres, \mu m' and ranges from 0 to 12. The y-axis is labeled 'Relative intensity (arbitrary units)' and ranges from 0 to 100. The curve starts at 0 at a wavelength of 1.0 \mu m, rises rapidly to a peak relative intensity of 85 at a wavelength of 3.5 \mu m, and then decreases more slowly as the wavelength increases further, reaching a value of approximately 10 at 12 \mu m.

Describe how the relative intensity of the radiation changes as the wavelength increases.

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Thermal radiation and energy balance Questions

  1. GCSE
  2. /Physics
  3. /Thermal radiation and energy balance