Green laser pointers emit radiation at 532 nm.What is the frequency of this radiation?

Question

Quizplus · Accepted Answer

The frequency ($f$) of radiation can be calculated using the speed of light ($c$) equation, $c = \lambda f$, where $\lambda$ is the wavelength. Given $c = 3.00 \times 10^8$ m/s and $\lambda = 532$ nm (which is $532 \times 10^{-9}$ m), solving for $f$ gives $f = \frac{c}{\lambda} = \frac{3.00 \times 10^8 \text{ m/s}}{532 \times 10^{-9} \text{ m}} \approx 5.64 \times 10^{14}$ Hz.

Green Laser Pointers Emit Radiation at 532 Nm