A Laser Used in DVD Players Has a Wavelength of 405

question 69

Multiple Choice

A laser used in DVD players has a wavelength of 405 nm.What is the frequency of this light in hertz (s^-1) ?

• A)7.41 x 10⁵ s^-1
• B)7.41 x 10¹⁴ s^-1
• C)1.35 x 10^-6 s^-1
• D)1.35 x 10^-13 s^-1
• E)1.22 x 10² s^-1

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