DP Physics (last assessment 2024)
Question 19M.3.SL.TZ2.bii
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.SL.TZ2.bii |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | Calculate | Question number | bii | Adapted from | N/A |
bii.
[Maximum mark: 1]
19M.3.SL.TZ2.bii
The following data are available for the Cepheid variable δ-Cephei.
Peak luminosity = 7.70 × 1029 W
Distance from Earth = 273 pc
Peak wavelength of light = 4.29 × 10–7 m
Calculate the peak surface temperature of δ-Cephei.
[1]
Markscheme
«»
=6800«K» ✔
Examiners report
This simple calculation using Wien’s law was very well answered.
