Edexcel IGCSE Physics 8 11p Absolute Magnitude Questions
Use the standard-distance definition to describe stellar brightness or luminosity.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- State that absolute magnitude measures a star’s brightness or luminosity at a standard distance.
Edexcel IGCSE Physics 8 11p Absolute Magnitude Questions question 1
[Maximum number: 2]
This question is about stars.
Astronomers measure the absolute magnitude of stars.
State what is meant by the term absolute magnitude.
- measurement of the brightness of a star
- at a standard distance
Accept:
- measurement of luminosity / power of a star
- apparent magnitude
- at 10 pc / 32.6 ly
Marking guidance:
- Condone incorrect distance.
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