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प्रश्न
Does the speed of an electromagnetic wave in free space depend on its wavelength?
पर्याय
Only for visible light.
Yes; the speed increases with wavelength.
Yes; the speed decreases with wavelength.
No; the speed is independent of wavelength.
MCQ
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उत्तर
The speed of electromagnetic waves in free space is independent of wavelength. All electromagnetic waves travel at the same speed in a vacuum.
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