What is the frequency of light that has a wavelength of 249 nm? hints what is the frequency of light that has a wavelength of 249 nm? 1.20 * 106 sec?1 1.20 * 1015 sec?1 1.20 * 1015 sec 1.20 * 10?3 sec?1?

Question

Reagan Meyer

Physics

9 September, 15:43

What is the frequency of light that has a wavelength of 249 nm? hints what is the frequency of light that has a wavelength of 249 nm? 1.20 * 106 sec?1 1.20 * 1015 sec?1 1.20 * 1015 sec 1.20 * 10?3 sec?1?

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Mario Lam · Answer 1

Electromagnetic radiation are represented in waves. Each type of wave has a certain shape and length. The distance between two peaks in a wave is called the wavelength. It is indirectly related to the frequency which is the number of wave that pass per unit of time. Wavelength is equal to the speed of light divided by the frequency. The speed of light is a constant that is equal to 3.00 x 10^8 meter per second.

Wavelength = speed of light / frequency

Frequency = speed of light / wavelength

Frequency = 3x10^8 m/s / 249x10^-9 m

Frequency = 1.20x10^15 per second

Therefore, the correct answer is the second option, 1.20x10^15 per second.