Light from a laser is propagating in the horizontal direction when it strikes a vertical wall. If the time-averaged intensity of the light from the laser beam is 1,500 watts/m2, what pressure does the beam exert on the wall? a.4.5 x 10-6 Pa b.4.0 x 10-6 Pa c.3.5 x 10-6 Pa d.3.0 x 10-6 Pa e.5.0 x 10-6 Pa

Intensity (I) = 1500 w/m2 Speed of light (c) = 3×108 m/s

Answered: Light from a laser is propagating in…

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter33: Electromagnetic Waves

Section: Chapter Questions

Problem 25P

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Light from a laser is propagating in the horizontal direction when it strikes a vertical wall. If the time-averaged intensity of the light from the laser beam is 1,500 watts/m², what pressure does the beam exert on the wall?

a.

4.5 x 10^-6 Pa

b.

4.0 x 10^-6 Pa

c.

3.5 x 10^-6 Pa

d.

3.0 x 10^-6 Pa

e.

5.0 x 10^-6 Pa

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