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Red light at 4.74 x 10^14 Hz passes through a glass slab of index n =...

Red light at 4.74 x 10^14 Hz passes through a glass slab of index n = 1.5 and width 10 times the vacuum wavelength. How long does it take the light to pass through the glass in fs (femtoseconds)?

Science   Advanced-Physics   
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Answer #1

Frequency,

Vacuum wavelength,

Refractive index of glass,

                              

Here, = velocity of light in glass medium

Required time =

                   =

                   =

                   =

                   

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