# Question

Blue light with a wavelength of 420 nm is incident on a certain material and causes the emission of photoelectrons with a maximum kinetic energy of 1.00 x 10-19 J.

(a) What is the stopping voltage?

(b) What is the material’s work function?

(c) What is the stopping voltage if red light (λ = 700 nm) is used instead? Explain.

(a) What is the stopping voltage?

(b) What is the material’s work function?

(c) What is the stopping voltage if red light (λ = 700 nm) is used instead? Explain.

## Answer to relevant Questions

When the surface of a particular material is illuminated with monochromatic light of various frequencies, the stopping potentials for the photoelectrons are determined to be the following: Plot these data, and from the graph ...What is the change in wavelength when monochromatic X-rays are scattered by electrons ons through an angle of 30°? Find the energy of a hydrogen atom whose electron is in the (a) n = 2 state and (b) n = 3 state. A hydrogen atom in its ground state is excited to the n = 5 level. It then makes a transition directly to the n = 2 level before returning to the ground state. (a) What are the wavelengths of the emitted photons? (b) Would ...For an electron in the ground state of a hydrogen atom, calculate its (a) Potential energy, (b) Kinetic energy, and (c) Total energy.Post your question

0