Please pay attention to units and provide an integer. Assume a laser has a power outputs...

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Question

Assume a laser has a power outputs of 4.8 mW If th

Please pay attention to units and provide an integer.

Answer 1

Answer #1

Power = 4.8 mW = 4.8*10^-3 W

Diameter = 1.97 mm

=>Radius = 0.985 mm = 9.85*10^-4 m

Area = pi*r^2 = 3.14*9.85*10^-4*9.85*10^-4

=304.65*10^-8

=3.046*10^-6

Now Intensity = Power/Area

=4.8*10^-3/3.046*10^-6

=1.57583*10^3

=1575

Ans=1575

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Answer 2

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