MYP Physics · 12 · multiple choice
Place the waves in order
Electromagnetic spectrum · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- recall
- Marks
- 3
- Topics
- 1
- Answer
- Complete
Which row orders three electromagnetic waves from lowest frequency to highest frequency?
- a
Select and explain Select the correct row, then state what happens to wavelength as frequency increases in a vacuum.
3 marks
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a
Select and explain Select the correct row, then state what happens to wavelength as frequency increases in a vacuum.
Predict from the governing principle before looking for a matching option. Then reject alternatives by checking direction, units, limiting behaviour or the physical meaning of each statement.
- 1
Selects option A: radio, visible, then X-ray is the order of increasing frequency.
- 2
States that wavelength decreases as frequency increases.
- 3
Links the inverse relationship to the same wave speed in a vacuum, using c = fλ or equivalent reasoning.
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