A photon of wavelength 400nm strikes a metal surface. The electrons are ejected with a velocity `5.85 xx 10^(5)ms^(-1)`. Calculate the minimum energy required to remove an electron from the metal surface. The mass of an electron is `9.109 xx 10^(-31)kg`.

When a light of wavelength 300 nm falls on the surface of potassium metal, electrons with kinetic energy of 1.5 xx 10^(5) J mol^(-1) are emitted, then calculate the minimum energy needed to remove an electron from the metal.

If the photon of the wavelength 150 p m strikes an atom and one of its inner bound electrons is ejected out with a velocity of 1.5xx10^(7) ms^(-1) , calculate the energy with which it is bound to the nucleus.

When electromagnetic radiaiton of wavelength 300 nm falls on the surface of sodium electrons are emitted with a kinetic enegry of 1.68xx10^(5)Jmol^(-) . What is the minimum enegry needed to remove an electorn from sodium? Strategy: The minimum enegry required to remove an electron from target metal is called work function W_(0) of the metal. It can be calculated from Eq., provided we know the energy of the incident photon and kinetic enegry of a single photoelectorn.

If the photon of wavelength 150pm strikes an atom and one of its inner bound electrons is ejected out with a velocity of 1.5*10^7 m/s. Calculate the energy with which it is bound to the nucleus.

A photon iof light with lambda = 470nm falls on a metal surface .As a result photoelectron are ejected with a velocity of 6.4 xx 10^(4) ms^(-1) .Find a. The kinetic energy of emited photonelectron b. The work function (in eV) of the metal surface

Calculate the wavelength of an electron moving with a velocity of 2. 05 xx 10^7 ms^(-1) .

Calculate the wavelength of an electron moving with a velocity of 2.05 xx 10^7 ms^(-1) .

A photon of wavelength 4xx10^(-7)m strikes on metal surface, the work function of the metal being 2.13 eV. Calculate (1) the energy of the photon (eV). (2) The kinetic energy of the emission.

A photon of wavelength 4 xx 10^(-7)m strikes on metal surface, The work function of the metal is 2.13eV . The velocity of the photo electron is

What will be de Broglie's wavelength of an electron moving with a velocity of 1.2 xx 10^(5) ms^(-1) ?