The wavelength of most energetic X-rays emitted when a metal target is bombarded by `40 keV` electrons, is approximately
`(h=6.62xx10^(-34)J-sec,1eV=1.6xx10^(-19)J,c=3xx10^(8)m//s)`.

The wavelength of the most energetic X–ray emitted when a metal target is bombarded by 100 KeV electrons is approximately

The work function of potassium is 2.0 eV. When it is illuminated by light of wavelength 3300A^(@) photo electrons are emitted. The stopping potential of photo electrons is [Plank’s constant h=6.6xx10^(-34)Js,1eV=1.6xx10^(-19)J,C=3xx10^(8)ms^(-1) ]

An X-ray tube operates on 30 kV. What is the minimum wavelength emitted (h=6.6 xx10^(-34)Js,e=1.6xx10^(-19)"Coulomb",c=3xx10^(8)ms)

The work function of caesium is 2.14 eV. When light of frequency 6xx10^(14)Hz is incident on the metal surface, photoemission of electrons occurs. What is the (a) maximum kinetic energy of the emitted electrons. (b) stopping potential and (c) maximum speed of the emitted photoelectrons. given , h=6.63xx10^(-34)Js, 1eV=1.6xx10^(-19)J, c=3xx10^(8)m//s .

Light of wavelength 4000 Å falls on a photosensitive metal and a negative 2 V potential stops the emitted electrons. The work function of the material ( in eV) is approximately ( h = 6.6 xx 10^(-34) Js , e = 1.6 xx 10^(-19) C , c = 3 xx 10^(8) ms^(-1))

Work function of Caesium is 2.14 eV. Find its threshold frequency. h=6.63xx10^(-34)Js,1eV=1.6xx10^(-19) J

What is the wavelength of light . Given energy =3.03xx10^(-19)J, h=6.6xx10^(-34)JS, c=3.0xx10^(8)m//s ?

Wavelength of photon having 35 keV energy will be…….. (h=6.625xx10^(-34))J-s,c=3xx10^(8)ms^(-1),1eV=1.6xx10^(-19)J) .

The wavelength of photon having energy of 35 keV is …….. (h=6.625xx10^(-34)J-s, c=3xx10^(8)ms^(-1), 1eV=1.6xx10^(-19)J) .