Yellow light has a wavelength of about 0.6 of which unit?
AMillimetre
BCentimetre
CKilometre
DMicrometre
Answer & Solution
Correct answer: D. Micrometre
1. Visible wavelengths are extremely small.
2. Yellow light is about 0.6 of a millionth of a metre.
3. That unit is the micrometre.
_Source: NCERT Class 12 Physics Part II, Chapter 10, Wave Optics._
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