If the deBroglie wavelenght of an of a photon of frequency `6xx 10 ^4`Hz ,then the speed of electron is equal to (Speed of light `=3 xx 10^8 m//s ` Planck's constant `=6.63 xx 10 ^(-34)` J s Mass of electron `=9.1 xx 10 ^(-31)` kg
If the deBroglie wavelength of an electron is equal to 10^(-3) times the wavelength of a photon of frequency 6xx10^(-14)Hz then the speed (in m/s) of electron is equal to: (Speed of light =3xx10^(8)m//s) Planck's constant =6.63xx10^(-34)J.s Mass of electron =9.1xx10^(-31)kg)
Give the order of the following : Planck's constant ( 6.63xx10^(-34) J-s)
Calculate the de Broglie wavelength of an electron moving with 1//3rd of the speed of light in vacuum. (Neglect relativistic effect) (Planck's constant : h=6.63xx10^(-34)Js , Mass of electron : m=9.11xx10^(-28)g )
what is the work fuction of the metal if the light of wavelength 4000Å generates photoelectrons of velocity 6xx10^(5) ms^(-1) from it ? (Mass o felectron =9xx10^(-31) kg Velocity of light =3xx10^(8)ms^(-1) Planck's constant =6.626xx10^(-34)Js Charge of electron =1.6xx10^(-19)jeV^(-1)
Find the wave number of a photon having an energy of 2.072 eV. Given : Charge on electron =1.6xx10^(-19)C Velocity of light air =3xx10^(8)" m"//"s" Planck's constant =6.63xx10^(-34)" J-s" .
The energy of a photon wavelength k = 1 meter is (Planck's constant = 6.625 xx 10^(-34) Js, speed of light = 3 xx 10^(8) m//s )
The kinetic energy of an electron is 4.55 xx 10^(-25)J . Calculate the wavelength . [h = 6.6 xx 10^(-34)Js , mass of electron = 9.1 xx 10^(-31)kg]
