What is the intensity of light incident on the retina

Reference no: EM13336432

A 2.0-mW laser pointer has a beam diameter of 1.7 mm. When it is accidentally pointed at a person's eye, the beam is focused to a spot of diameter 20.0 µm on the retina and the retina is exposed for 82 ms.

(a) What is the intensity of the laser beam?

kW/m2

(b) What is the intensity of light incident on the retina?

MW/m2

Reference no: EM13336432

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