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A laser beam λ=633 nm has a power of 3 mW. What will be the pressure exerted on a surface by this beam if the cross-section area is 3 mm2? (Assume perfect reflection and normal incidence).

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A laser beam λ=633 nm has a power of 3 mW. What will be the pressure exerted on a surface by this beam if the cross-section area is 3 mm2? (Assume perfect reflection and normal incidence).



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