Which is the correct ascending order of wavelengths?
1
λvisible < λX-ray < λgamma-ray < λmicrowave
2
λgamma-ray < λX-ray < λvisible < λmicrowave
3
λX-ray < λgamma-ray < λvisible < λmicrowave
4
λmicrowave < λvisible < λgamma-ray < λX-ray
5
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