Homework SourseEinsteins explanation account for each of these characterist
Einstein’s explanation account for each of these characteristics of the photoelectric effect. Which of these cannot be explained by classical physics?
The photoelectric current is zero for frequencies below some threshold.
The photoelectric current decreases slowly as V becomes more negative.
The photoelectric current is independent of V for V>0.
The stopping potential is independent of the light intensity.
The photoelectric current increases with increasing light intensity.
It appears there may be more than one answer
| The photoelectric current is zero for frequencies below some threshold. | ||
| The photoelectric current decreases slowly as V becomes more negative. | ||
| The photoelectric current is independent of V for V>0. | ||
| The stopping potential is independent of the light intensity. | ||
| The photoelectric current increases with increasing light intensity. It appears there may be more than one answer |
Solution
Classical physic does not explain the following characteristics :
1 : The photoelectric current is zero for frequencies below some threshold.
2 : The stopping potential is independent of the light intensity.
Nothing in classical physics explain a threshold frequency (as opposed to light intensity) or the \"instant\" current or the stopping potential independent of light intensity
