Question
Asked Apr 24, 2019
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Laser Safety A 0.95 mW laser emits a narrow beam of light that enters the eye. d=5.0 um

a.  How much energy is absorbed by the eye in 0.20 s? 

b. The eye focuses this beam to a tiny spot on the retina, perhaps 5.0 μm in diameter. What is the average intensity of light at this spot?     

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Expert Answer

Step 1

a)

The expression for the energy,

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Step 2

Substitute the values,

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Step 3
  1. b)

The expression for the i...

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