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

Question

Quizplus · Accepted Answer

The frequency of light can be calculated using the formula: frequency (ν) = speed of light (c) / wavelength (λ). The speed of light is approximately 3.00 x 10^8 m/s. Converting 405 nm to meters gives 405 x 10^-9 m. Thus, ν = (3.00 x 10^8 m/s) / (405 x 10^-9 m) = 7.41 x 10^14 s^-1.

A Laser Used in DVD Players Has a Wavelength of 405