A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of h//lambda (where lambda is wavelength associated with electron wave) is given by

A stream of electrons from a heated filament was passed between two ch

1.	A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of h//lambda (where lambda is wavelength associated with electron wave) is given by
Answer» `sqrt(2meV)` meV 2meV `sqrt(meV)` SOLUTION :K.E of an electron`rarr` CHARGE x POTENTIAL `rarr e XX v` `therefore lambda=(h)/sqrt(2xxK>Exxm)` `(h)/(lambda)=sqrt(2eVm)`