Eric Nicholas K's answer to Sonia's Secondary 4 Biology Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Blue light is closer towards the gamma ray end of the spectrum than the radio wave end of the spectrum. Wavelengths decrease in the direction of the gamma ray end.

So blue light, being closer to the gamma ray end, will have a shorter wavelength than red light.