Is stopping potential independent of intensity in photoelectric effect?
Table of Contents
- 1 Is stopping potential independent of intensity in photoelectric effect?
- 2 Why is photoelectric effect independent of intensity?
- 3 Why is stopping potential dependent on frequency?
- 4 How does intensity affect stopping voltage?
- 5 Why intensity does not affect stopping potential?
- 6 Why does stopping potential depend on frequency?
Is stopping potential independent of intensity in photoelectric effect?
Stopping potential does not depend on the intensity of incident light. On increasing intensity, the value of saturated current increases, whereas the stopping potential remains unchanged. Stopping potential does not depend on the intensity of incident radiation.
Why is photoelectric effect independent of intensity?
Electrons are ejected only when the frequency of the incident light is higher than a threshold value, fo, regardless of how intense the light is. The threshold frequency depends on the material being illuminated. However, the maximum kinetic energy (KEMAX) of the photoelectrons is independent of the light intensity.
What is the effect of intensity on the stopping potential in photoelectric effect?
10. What is the effect of intensity on the stopping potential? Explanation: Changing the intensity of incident radiation does not affect the stopping potential. As the intensity increases, the number of photoelectrons ejected increases.
Why does the stopping potential depend on the frequency of light but not intensity?
The stopping potential does not depend on the intensity nor the number of incident photons but the stopping potential depends on the frequency of the incident light, the higher the frequency of the incident light higher the stopping potential or cut potential. It also depends on the kinetic energy of the electrons.
Why is stopping potential dependent on frequency?
When a stopping potential is applied, the photoelectron loses its initial kinetic energy and comes to rest. Thus the stopping potential depends upon the frequency of the incident light and the material of the metal surface.
How does intensity affect stopping voltage?
The intensity of the light has no effect on the maximum kinetic energy of the photoelectrons. Therefore, the stopping voltage does not increase.
What is stopping potential in photoelectric effect class 12?
The negative potential of the collector plate at which the photoelectric current becomes zero is called stopping potential or cut-off potential. Stopping potential is that value of retarding potential difference between two plates which is just sufficient to halt the most energetic photoelectrons emitted.
What is the effect of the intensity of incident radiation on the stopping potential in photoelectric emission 1?
The value of stopping potential in photo electirc emission from a metal surface decreases with the decrease in frequency of incident radiation, provided the frequency of radiation is greater than threshold frequency.
Why intensity does not affect stopping potential?
Intensity of radiation indirectly means the amount of photons incident on the photocell. Higher the intensity, more the number of incident photons, more the ejected electrons would be. Stopping potential doesn’t depend upon the intensity of the incident radiation.