LIGHT-REFLECTION AND REFRACTION(PLEASSSSSSSSEEEEE I NEED THIS!HURRY!)

Asked by gunjansingh | 9th Jun, 2009, 10:36: PM

Expert Answer:

refractive index of glass slab = speed of light in air / speed of light in glass slab

                                                 1.5   = 3 x 108 / v 

                                                 v = 2 x 108 m / s

 

since speed = distance / time

time = distance / speed = 3 x 10-3 / 2 x 108 = 1.5 x 10-11 = 15 p s

Answered by  | 10th Jun, 2009, 09:34: AM

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