Physics, 01.12.2020 16:50 majestyic1207

If the eye receives an average intensity greater than 100W/m2, damage to the retina can occur. This quantity is called the damage threshold of the retina. A. What is the largest average power (in mW) that a laser beam 1.44mm in diameter can have so that it can be considered safe to view head-on?
B. What is the maximum value of the electric field for the beam in part A?
C. What is the maximum value of the magnetic field for the beam in part A?
D. How much energy would the beam in part A deliver per second to the retina?

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