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Statement of a problem № 3926

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A laser beam has a cross-sectional area of 4.0 mm2 and a power of 1.2 mW. Find (a) intensity I, (b) E0 , (c) B0 .

Solution:
A laser beam has a cross-sectional area of 4.0 mm2 and a power of 1.2 mW. Find (

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