The wavelength of red heliumneon laser light in air is 632.8 nm. (a) What is its frequency?

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The wavelength of red helium–neon laser light in air is 632.8 nm.
(a) What is its frequency?
(b) What is its wavelength in glass that has an index of refraction of 1.50?
(c) What is its speed in the glass?
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College Physics

ISBN: 978-0321601834

7th edition

Authors: Jerry D. Wilson, Anthony J. Buffa, Bo Lou

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