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प्रश्न
The commonly used unit for the wavelength of light is ______.
विकल्प
angstrom
metre
light year
none of these.
MCQ
रिक्त स्थान भरें
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उत्तर
The commonly used unit for the wavelength of light is angstrom.
Explanation:
Angstrom ($$1\text{ \AA} = 10^{-10}\text{ m}$$) is the traditional unit widely used to specify wavelengths of visible light (typically 4000 Å to 8000 Å). Metres and light years are too large for convenient optical wavelength measurements.
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