Light of wavelength `2,000 overset @A` falls on an aluminium surface.In aluminium 4.2 eV are required to remove an electron.What is the kinetic energy in eV of
the fastest emiited electron

Light of wavelength 5000 overset @A falls on a photosensitive plate with work function 1.9 eV. Find energy of photon in eV(electron Volt)

What is the de-Broglie wavelength of an electron with kinetic energy of 120 eV?

What is the momentum and De Broglie wavelength of an electron with kinetic energy of 120 eV.

light of wavelength 2200 overset@A (angstorm) falls on photosensitive plate with work function 4.1 eV. Find energy of photon in eV (electron Volt) Find maximum kinetic energy of photoelectron and stopping potetial.

Light of wavelength 5000 overset @A falls on a photosensitive plate with work function 1.9 eV. FInd maximum kinetic energy of photoelectron and stopping potential.

In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 A: (a) Estimate the potential energy of the system in eV, if the zero of potential energy is taken at 1.06 overset @A separation of the electron from proton? (b) What is the minimum work required to free the electron, given that its kinetic energy in the orbit is half the magnitude of potential energy obtained in (a)?

Energy of the photon of sodium light of wavelength 5,890 overset @A equals the energy gap between valence and conduction band of a semiconductor. Find the minimum energy E required to create a hole-electron pair.