(i) A ray of light passes from water to air. How does the speed of lig – InterviewSolution

1.

(i) A ray of light passes from water to air. How does the speed of light change? (ii) Which colour of light travels fastest in any medium except air?

Answer»

(i) When light passes from water to air i.e., from denser to rarer its speed increases.

(ii) Red light travels fastest.

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