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Q. 19

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 901

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Short Answer

A helium-neon laser emits a -mm-diameter laser beam with a power of . What are the amplitudes of the electric and magnetic fields of the light wave?

The amplitudes of the light wave's electric and magnetic fields is,

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Step by Step Solution

Step: 1 Finding the values of :

Finding the world first

Then finding the values

Step: 2 Finding the vales of :

By using the formula,

Step: 3 Finding the values of :

By using,

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