Photoelectric Effect: Monochromatic light is incident on a metal surface, and the ejected electrons give rise to a current in the circuit shown in the figure. The maximum kinetic energy of the ejected electrons is determined by applying a reverse ('stopping') potential, sufficient to reduce the current in the ammeter to zero. If the intensity of the incident light is increased, how will the required stopping potential change?
A. It will remain unchanged.
B. It will increase.
C. It will decrease.
Answer: A
Physics & Space Science
You might also like to view...
How big are nebulae in size?
A.) 10^5 m. B.) 10^10 m. C.) 10^25 m. D.) 10^17 m. E.) 10^50 m.
Physics & Space Science
Which of these behaves most similarly to electrons in the Feynman experiments?
a. atoms b. atomic nuclei c. protons d. photons e. bullets
Physics & Space Science
A wave travels an average distance of one meter in one second with a frequency of 1 hertz. Its amplitude is
A) less than 1 meter. B) 1 meter. C) more than 1 meter. D) need more information
Physics & Space Science
Briefly summarize the differences between terrestrial and jovian planets
What will be an ideal response?
Physics & Space Science