A plane light wave with wạvelength \( \lambda=0.60 \mu \mathrm{m} \) and intensity \( I_{0} \) f...

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A plane light wave with wạvelength \( \lambda=0.60 \mu \mathrm{m} \) and intensity \( I_{0} \) falls normally on a large glass plate whose side view is shown in Fig. 5.22. At what height \( h \) of the ledge will the intensity of light at points located directly below be
Fig. 5.22
twice as low as \( I_{0} \) (the losses due to reflection are to be neglected).
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