Calculate the energy of one mole of photons of radiations having wavelength 300 nm. `(c=3xx10^(8) mS^(-1)`, h=`6.626xx10^(-34)JS)`.

What do you mean by photo electric effect? Calculate the energy of one mole of photons of radiations having wave length 200 nm.

Calculate the energy of a photon of wavelength 6 xx 10^(-5) cm.

A photo electric surface has work function 2eV. What is the maximum kinetic energy of the emitted photoelectrons ejected by light by wavelength 3000overset(@)A Given h=6.6xx10^(-34)J-S,e=1.6xx10^(-19)C . m_e=9g0^(-31)kg,C = 3xx10^8m//sec

Calculate the de - Broglie wavelength associated with an electron having speed 10^(7) ms^(-1)

For what kinetic energy of a neutron will the associated de - Broglie wavelength be 1.4 xx 10^(-10) m?

Calculate the de-Broglie wave length of a Xe atom moving with velocity 2.4xx10^2ms^-1 the mass of Xe atom is 2.2xx10^(-25) kg .

Calculate the amount of radiation of a black body at 400K temperature. (sigma= 5.67 xx 10^-8 watt//m^2 //k^4)