Final answer:
The claim that increasing the intensity of light can cause the photoelectric effect to occur regardless of the frequency is false. The frequency of light must be above a threshold value for the photoelectric effect to happen, while increasing intensity only increases the number of ejected electrons but does not affect their kinetic energy.
Step-by-step explanation:
The statement that increasing the intensity (brightness) of light will cause the photoelectric effect to occur, regardless of a low frequency, is false. According to Einstein's explanation of the photoelectric effect, it's not the intensity but the frequency of the incoming light that must be above a certain threshold for the photoelectric effect to occur. Increasing the intensity of light will increase the number of ejected electrons but not their kinetic energy unless the frequency is above the threshold.
It's important to note:
- Increasing the brightness of incoming light has no effect on the kinetic energy of the ejected electrons.
- Increasing the frequency of incoming light increases the kinetic energy of the ejected electrons.
- Increasing the intensity of incoming light increases the number of photons, and therefore, the number of ejected electrons does increase, assuming the frequency is above the threshold.