A plate glass window $(n=1.5)$ has a thickness of $4.0 \times 10^{-3} \mathrm{m}$ . How long does it take light to pass perpendicularly through the plate?
Added by Luz M.
Step 1
00 x 10^8 m/s Refractive index of glass (n) = 1.5 Speed in glass = (3.00 x 10^8 m/s) / 1.5 Speed in glass = 2.00 x 10^8 m/s Show more…
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