An argon gas laser produces a cylindrical beam of light having a cross sectional area A = 4 x 10-6 m². The average power of the beam is P. It is found that the average energy stored in 3 m length of the beam is 30 nj. What is P? C nj = 10-9 J) 30 nW 3 W 6 W

An argon gas laser produces a cylindrical beam of light having a cross sectional area A = 4 x 10-6 m². The average power of the beam is P. It is found that the average energy stored in 3 m length of the beam is 30 nj. What is P? C nj = 10-9 J) 30 nW 3 W 6 W

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 48P

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

An argon gas laser produces a cylindrical beam of light having a cross sectional area A = 4 x 10-6 m². The average
power of the beam is P. It is found that the average energy stored in 3 m length of the beam is 30 nJ. What is P? (1
nj = 10-9 J)
Hig
30 nW
3 W
6 W

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