The absolute refractive indices of glass and water are \(\frac {3}{2}\) and \(\frac {4}{3}\). Determine the ratio of the speeds of light in glass and water.(a) 5:7(b) 9:8(c) 7:5(d) 8:9I had been asked this question in unit test.This question is from Wave Optics topic in portion Wave Optics of Physics – Class 12

The absolute refractive indices of glass and water are \(\frac {3}{2}\

1.	The absolute refractive indices of glass and water are \(\frac {3}{2}\) and \(\frac {4}{3}\). Determine the ratio of the speeds of light in glass and water.(a) 5:7(b) 9:8(c) 7:5(d) 8:9I had been asked this question in unit test.This question is from Wave Optics topic in portion Wave Optics of Physics – Class 12
Answer» RIGHT ANSWER is (d) 8:9 Easiest explanation: \( \FRAC {v_g}{v_w} = \frac {\mu_w}{\mu_g}\) \(\frac {v_g}{v_w} = \frac {(\frac {4}{3} )}{(\frac {3}{2}) }\) \(\frac {v_g}{v_w}\) = 8:9

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