Find the energy of the electron in eV in the third Bohr orbit of the hydrogen atom. (`Rydberg's constant `R = 1.097 xx10^7 m^-1 `Planck's constant (h) =` 6.63xx10^-34 J.S`, velocity of light in air (c) = `3xx 10^8 m//s)`

The threshold wavelength for silver is 3800overset@ A . Calculate maximum kinetic energy in eV of photoelectrons emitted when ultraviolet light of wavelength 2600overset@ A falls on it. Also calculate stopping potential ( 1 eV = 1.6 xx 10^-19 J , Planck's constant = h = 6.63 xx 10^-34 Js , speed of light in vacuum = 3 xx 10^8 m//s ).

Find the value of Rydberg's constant if the energy of electron in second orbit in hydrogen atom is -3.4eV

Find the series limit of Paschen series R = 1.097 xx 10^7 m^_1 .

Calculate the value of Bohr Magneton (Given: Charge on electron = 1.6xx10^-19 C, h (Planck's) constant = 6.63xx10^-34Js, mass of electron m_e = 9.1xx10^-31 kg)

The photoelectric threshold wavelength of a metal is 230 nm. Determine the maximum kinetic energy in joule and eV of the ejected electron from metal surface when it is exposed to a radiation of wavelength 180 nm. (Planck's constant h = 6.63 xx 10^-34 J-S, C = 3 xx 10^8 m//sec .)

The work function of metals is in the range of 2 eV to 5 eV. Find which of the following wavelength of light cannot be used for photoelectric effect. (Consider, Planck's constant = 4 xx 10^(-15) eV.s , velocity of light = 3 xx 10^(8) m//s )

The energy of an electron in an excited state of hydrogen atom is -1.51 eV . Calculate the angular momentum of the electron in this state. h = 6.63 xx 10^-34 Js

Calculate the de Broglie wavelength of an electron moving with (1/3)rd of the speed of light in vacuum.(Neglect relativistic effect) (Planck's constant : h = 6.63 xx 10^-34 js , Mass of electron : m = 9.11 xx 10^-28 g )

The radius of the second Bohr orbit for hydrogen atom is________. [Plank's constant, h = 6.6262 xx 10^-34 Js mass of electron = 9.109 xx 10^-31 kg charge on electron, e = 1.602 xx 10^-19 C]