5. Is the speed of each light of each colour different? discus?
6. How does the refractive index varies with wavelength?
7. Why is red colour selected for sanger signal lights?
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Answer:
yes the speed of each light of each colour is different in different medium.
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5. In vacuum all colours of light have same speed. Speed does not depend on colour of light...
6. higher the refractive index higher is wavelength.
7. Red gets lost less due to shorter wavelength and reaches us more than any other colour which gets refracted so it is used as danger signal.
Thank you
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