During a test, a sensor records the thermal radiation emitted by the same area of a heat shield.
| Time in test / s | Peak wavelength / μm\mu\mathrm{m}μm |
|---|---|
| 0 | 5.2 |
| 10 | 4.6 |
| 20 | 3.6 |
| 30 | 4.2 |
A scientist states that the temperature of the heat shield increased throughout the test.
Evaluate this statement using the data.
Explain how the total intensity of radiation emitted at 30 s compares with the total intensity emitted at 10 s.
96 exam-style questions on Edexcel GCSE Physics 5.3 Black body radiation, covering 5.3.1 Emission of radiation and temperature, 5.3.2 Radiation balance and constant temperature, and 5.3.3 The temperature of the Earth. Each one has a worked solution and a mark scheme showing where the marks go.