Physics (AS & A Level) · Oct / Nov 2022 · Paper 13 · Question 24
Which microorganisms have a length that is equal to the wavelength in free space of an electromagnetic wave that is visible to the human eye?
- Aalgae of length 0.5 μm
- Bbacteria of length 5.0 μm
- Cfungi of length 50 μm
- Dprotozoa of length 100 μm
As printed in the paper
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Correct answer: A. algae of length 0.5 μm
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