A ray of light strikes a 9.70-cm thick Plexiglasplate (the surrounding medium is

Question

A ray of light strikes a 9.70-cm thick Plexiglasplate (the surrounding medium is air). The index of refraction ofPlexiglas is 1.51. Find the time (in seconds) required for light topass through the plate if the light ray strikes with a0O angle of incidence. A ray of light strikes a 9.70-cm thick Plexiglasplate (the surrounding medium is air). The index of refraction ofPlexiglas is 1.51. Find the time (in seconds) required for light topass through the plate if the light ray strikes with a0O angle of incidence.

Explanation / Answer

Refractive index =c/v 1.51=3*108/v v=1.986*108m/s The time taken is t=l/v=0.097/1.986*108=4.88233*10-10s Hence we get by it.

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