Radiation of a certain wavelength causes electrons with a maximum kinetic energy of 0.62 eV to be ejected from a metal whose work function is 2.65 eV. What will be the maximum kinetic energy (in eV) with which this same radiation ejects electrons from another metal whose work function is 2.01 eV? Units are in eV.

Solution Preview

The energy of the incident radiation is given by,
E = h c/ lambda

where, h is the plankc constant
c is the velocity of light
and lambda is the wavelength of the incident radiation.

Now, ...

Solution Summary

This solution calculates the maximum kinetic energy of the ejected electrons with step-by-step workings.

Ultraviolet light is incident normally on the surface of a certain substance. The binding energy of the electrons in this substance is 3.44 eV. The incident light has an intensity of 0.055 W/m2. The electrons are photoelectrically emitted with a maximum speed of 4.2 X 105 m/s. How many electrons are emitted from a square cen

The work function of an element is the energy required to remove an electron from the surface of the solid. The work function for cadmium is 378.2 kJ/mol (that is, it takes 378.2 kJ of energy to remove 1 mol of electrons from 1 mol of Cd atoms on the surface of a sample of cadmium.) What is the maximum wavelength of light that c

The minimum frequency of light needed to eject electrons from a metal is called the threshold.
Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.27*10^14s^-1.
With what kineticenergy will electrons be ejected when this metal is exposed to light with a wavelength of lamda = 245

For the following atoms in their ground state, determine the number of electrons in each energy shell. If there are no electrons in the particular energy shell, leave that answer box blank.
(Please see attached file

A)Describe the two physical processes that give rise to the production of X radaition when electrons bombard the target of a diagnostic x-ray tube operation at 1000kvp. Explain the shape of the energy spectrum of photons from the target, detailing how this is modified by changes in kVp and target material.
(b)Describe how th

Light from a laser hits the surface of cesium. With a minimum photon energy of 2.14eV being required to remove photons. When the surface of cesium is illuminated with this light photoelectrons are emitted with a max kineticenergy of 0.76eV. Assuming that the Planck constant is 4.14x10^-15 eV Hz-1.
What would be the energy of

a) What is the acceleration of an electron in a circular Bohr orbit of radius
[4(pi)(epsilon_naught)(hbar^2)/(mass_electron)(e^2^)] in a hydrogen atom?
b) According to the classical electrodynamics, what is the rate at which the electron loses energy by radiation? Hint: the classical formula for energy lost by electromagn

The resolving power of a microscope is proportional to the wavelength used. A resolution of approximately 1.0 x 10-11 m (0.01 nm) would be required in order to "see" an atom. (a) If electrons were used (electron microscope), what minimum kineticenergy would be required for the electrons? (b) If phtons were used, what minimum p

Please help with the following problems.
(1) Suppose that a photon has energy of 5 x 10 -19 J. (five times ten to the negative 19th Joule) What's the wavelength of this photon? What is its frequency?
(2) The photon in the above problem strikes a metal plate that has a work function of PHI = 3 x 10 ^ -19 J. What's the max