A ceramic thermal-protection tile is tested at two temperatures. At both temperatures, the tile is not glowing.
The table shows measurements of the thermal radiation emitted by the tile.
| Temperature in ∘C^\circ\text{C}∘C | Intensity in W/m2\text{W/m}^2W/m2 | Peak wavelength in μm\mu\text{m}μm |
|---|---|---|
| 20 | 380 | 9.9 |
| 220 | 3000 | 5.9 |
Explain why the radiation emitted by the tile is not visible at these temperatures.
The tile is then heated to a temperature above 220 ∘C220\ ^\circ\text{C}220 ∘C.
Predict how the intensity and the peak wavelength of the radiation emitted by the tile will compare with the values at 220 ∘C220\ ^\circ\text{C}220 ∘C.
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.