Exam-style question
Try this first
How does the frequency of an electromagnetic wave relate to its speed?.
- A.Higher frequency waves travel faster than lower frequency waves.
- B.The speed of electromagnetic waves is constant, regardless of frequency.
- C.Lower frequency waves have a higher speed in a vacuum.
- D.Frequency and speed are inversely proportional.
Model answer
What a good answer should say
- The speed of electromagnetic waves is constant, regardless of frequency.
Explanation
Why this works
This is correct because the speed of light in a vacuum is a constant value, and it does not change with the frequency of the electromagnetic wave, which is a key aspect of electromagnetic wave theory.
Common mistake
No common mistake is linked to this question yet.