Question 10 A laser pointer delivers an average power of 2 mW in a circular beam...

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Answer #1

B= 005 3.14X/64X5 X62-8 B = SOIT Power P = 2mW=2410 3 W -6 Area A- Id² = 3.14x10 m2 I d 2_กา มา speed of light c=3x 108mis so

Answer 2

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