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प्रश्न
When light enters glass from vacuum then the wavelength of light ______
विकल्प
remains constant
decreases
increases
becomes zero
MCQ
रिक्त स्थान भरें
उत्तर
When light enters glass from a vacuum then the wavelength of light decreases.
Explanation:
Speed = wavelength × frequency
The speed of light in glass is less than that in a vacuum. The frequency does not change. The wavelength decreases.
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