DP Physics (last assessment 2024)
Question 18M.2.SL.TZ1.c.ii
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.SL.TZ1.c.ii |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Discuss | Question number | c.ii | Adapted from | N/A |
c.ii.
[Maximum mark: 2]
18M.2.SL.TZ1.c.ii
The radioactive nuclide beryllium-10 (Be-10) undergoes beta minus (β–) decay to form a stable boron (B) nuclide.
An ice sample is moved to a laboratory for analysis. The temperature of the sample is –20 °C.
Discuss how the frequency of the radiation emitted by a black body can be used to estimate the temperature of the body.
[2]
Markscheme
the (peak) wavelength of emitted em waves depends on temperature of emitter/reference to Wein’s Law
so frequency/color depends on temperature
[2 marks]
