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What physical quantity is the same for X-rays of wavelength 10^{-10} \mathrm{~m}, the red light of wavelength 6800 \AA and radiowaves of wavelength \mathbf{5 0 0 m ?}
CBSE | Class 12 | Electromagnetic Waves | NCERT | Physics
What physical quantity is the same for X-rays of wavelength 10^{-10} \mathrm{~m}, the red light of wavelength 6800 \AA and radiowaves of wavelength \mathbf{5 0 0 m ?}

All wavelengths of light travel at the same speed in a vacuum. In the vacuum, it is unaffected by the wavelength.

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