In the diagram below, a photon of energy E = hf = Φ is incident on an electron at the energy level shown.What will happen?Select one:a.the electron will be emitted because it can interact with two or more photons at the same timeb.the electron moves up in energy and can be emitted if it interacts a second photon some time afterwardsc.the electron cannot be emittedd.the electron can be emitted if a biasing voltage of + ɸ/e is appliede.the electron can be emitted if a biasing voltage of - ɸ/e is applied

In the following diagram, photons of frequency 3Φ/h are incident on a metal, and interact with electrons at energy levels A and B.Which of the following statements is true?Select one:a.photoelectrons from energy level B will have more kinetic energy than those from energy level Ab.photoelectrons from energy level A will have more kinetic energy than those from energy level Bc.photoelectrons from A will require a smaller stopping voltage than those from level Bd.kinetic energy of photoelectrons depend only on photon frequency and are independent of inital electron energye.kinetic energy of photoelectrons depend only on work function and are independent of inital electron energyf.no photoelectrons will be emitted

What must happen for an electron to return to its original energy level from a higher energy level?A.It must release photons.B.It must emit electrical energy.C.It must absorb electrical energy.D.It must absorb photons.

10. If an electron jumps from second orbit to first orbit in hydrogen atom, it emits photon of

The kinetic energy of emitted electron is E when the light incident on the metal has wavelength  λ.To double the kinetic energy, the incident light must have wavelength:

Which of the following is an example of when an electron absorbs energy?1 pointWhen it goes from the fourth energy level to the first.When an electron releases a photon.When it goes from the second energy level to the fourth.When it maintains constant energy and doesn't change its energy level.