A 2.0 mW laser pointer has a beam diameter of 1.5 mm. When it is accidentally pointed
Question:
A 2.0 mW laser pointer has a beam diameter of 1.5 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 80 ms.
(a) What is the intensity of the laser beam?
(b) What is the intensity of light incident on the retina?
(c) What is the total energy incident on the retina?
Step by Step Answer:
a The intensity of laser is equal to the ratio of power ...View the full answer
College Physics With An Integrated Approach To Forces And Kinematics
ISBN: 978-1260547719
5th Edition
Authors: Alan Giambattista
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