The speed of light in a vacuum is 3108 ms the speed of

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The speed of light in a vacuum is 3*10^8 m/s . The speed of light whitin a particular substance is 1.5 * 10^8 m/s. The index of reflaction of the substance is:

a) 1.0

b) 2.0

c) 2.5

d) 0.5

e) None of these

Reference no: EM13594560

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