Question

What is the effect of intensity on the stopping potential?
a)As intensity increases stopping potential increases linearly
b)
As intensity decreases stopping potential increases exponentially
с)
No effect
d) As intensity increases stopping potential decreases linearly​

Answer 1

Answer:

d) As intensity increases stopping potential decreases linearly

Explanation:

If the intensity of the light increases then frequency of the light increases then more electrons are ejected from the metal surface and leads to decreased the stopping potential.

Answer 2

There is c) no effect of intensity on stopping potential.

Explanation:

• The minimum retarding means the negative potential of the anode of a photoelectric tube for which photoelectric current stops or becomes zero is called stopping potential.

• Stopping potential is the required potential for stopping the removal of an electron from a metal surface when the incident light energy is greater than the work potential of the metal on which the incident light is focused.

• 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.