ನೇರಳೆ ಬಣ್ಣದ ಬೆಳಕಿನ ತರಂಗಾಂತರವು ಸುಮಾರು __________ ಆಗಿದೆ.

1
10-11 pm
2
1 - 10 mm
3
455 - 390 nm
4
230 - 310 pm

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