The wavelength of light emitted from an LED lightbulb that has a frequency of 60 Hz is _____ nm.

5 x 10¹⁵

5 x 10^-14

2.5 x 10⁷

2.5 x 10¹⁴

-5 x 10¹⁴

 

λ = 5*10¹⁵ nm

Step-by-step explanation

The wavelength of light is related to the frequency by the formula:

c = λ*f, where λ is the wavelength of emitted light, f is the frequency of the emitted light and c is the speed of light in air.

Given: c = 3*10⁸ m/s, f = 60 Hz = 60 s^-1

λ = c/f

λ = 3*10⁸ / 60 = 5*10⁶ m

Now, 10^-9 m is equal to 1 nm

Therefore, 5*10⁶ m is equal to 5*10⁶ / 10^-19 = 5*10¹⁵ nm (Option 1)