I know that...

wavelength = velocity * frequency
frequency = velocity/wavelength

If I have the voltage and the wavelength, does the voltage count as the velocity to find the frequency? If not, how do I find the frequency when I know the intensity, wavelength, and voltage?

Thanks!

The first equation is wrong.

wavelength=velocity/frequency.

No, voltage is not velocity.

frequency is gain, velocity/wavelength. Is there some reason you do not thing the velocity is the speed of light?

I'm doing a lab report on the photoelectric effect. I forgot about the velocity of light! I guess I can assume the values of the experiment in a vacuum, hehehe. Thanks! :) That makes it sooo much easier...

In the equations you mentioned, wavelength (λ) is the distance between two corresponding points on a wave, frequency (f) is the number of complete cycles of the wave that pass a given point in one second, and velocity (v) refers to the speed at which the wave propagates.

However, voltage (V) is not directly related to velocity in these equations. Voltage is a measure of electric potential difference, whereas velocity is the speed at which the wave travels. Therefore, voltage cannot be used to determine the frequency directly.

To find the frequency when you know the intensity, wavelength, and voltage, you would need additional information or equations. Intensity, wavelength, voltage, and frequency are distinct properties of a wave, and knowing some of these parameters alone is not enough to determine the others directly.

To accurately find the frequency, you would typically need to measure or know at least two of the following parameters: wavelength, velocity, or time period (T, the time taken for one complete cycle of the wave). With this additional information, you can use the equations you mentioned earlier to calculate the frequency.

For example, if you know the wavelength (λ) and the velocity (v), you can use the equation frequency (f) = v/λ to find the frequency. Alternatively, if you know the time period (T), you can use the equation frequency (f) = 1/T. However, without further details or measurements, it is challenging to determine the frequency with just the intensity, wavelength, and voltage.