The photoelectric equation for the kinetic energy of a photoelectron is, following Einstein, E ≤ hf − W, where h is Planck’s constant, f is the frequency of the light, and W is the work-function. Sodium has W = 3.2×10−19 J. When sodium is illuminated by monochromatic light of a particular frequency, electrons are emitted with speeds up to 8 × 105 m s−1 . a) Calculate the wavelength of the light. b) Calculate the stopping potential.
The photoelectric equation for the kinetic energy of a photoelectron is, following Einstein, E ≤ hf − W, where h is Planck’s constant, f is the frequency of the light, and W is the work-function. Sodium has W = 3.2×10−19 J. When sodium is illuminated by monochromatic light of a particular frequency, electrons are emitted with speeds up to 8 × 105 m s−1 . a) Calculate the wavelength of the light. b) Calculate the stopping potential.
Related questions
Question
The photoelectric equation for the kinetic energy of a photoelectron is, following Einstein, E ≤ hf − W, where h is Planck’s constant, f is the frequency of the light, and W is the work-function. Sodium has W = 3.2×10−19 J. When sodium is illuminated by monochromatic light of a particular
frequency, electrons are emitted with speeds up to 8 × 105 m s−1
.
a) Calculate the wavelength of the light.
b) Calculate the stopping potential.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps
