alleryViolet light has a wavelength of about:
A600 nm
B400 nm
C700 nm
D500 nm
Answer & Solution
Correct answer: B. 400 nm
1. Violet lies at the short wavelength end of the visible spectrum.
2. Its wavelength is about 400 nm.
3. Red, at the other end, is about 700 nm.
_Source: syllabus Physics Part II, Ch 9 'Ray Optics and Optical Instruments'_
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