Physics
Compare the speeds of light of wavelength 4000Å (i.e. violet light) and 8000Å (i.e. red light) in vacuum.
Refraction Plane Surfaces
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Answer
As we know that light is an electromagnetic wave and it travels with same speed for all wavelength, which is equal to 3 x 108.
Hence, the ratio of speeds of light of wavelength 4000Å (i.e. violet light) and 8000Å (i.e. red light) in vacuum = 1:1.
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