Find out the photoelectric threshold wavelength of copper. Given work function of copper `= 4.52eV, h = 6.6 xx 10^(-34)J.s, 1 eV = 1.6 xx 10^(-19)J`

The photoelectric threshold wavelength for Potassium having work function of 2eV is.......... (Take h= 6.6 xx 10^(-34) J s. 1 eV = 1.6 xx 10^(-19) J , C = 3 xx 10^8 Ms^(-1) )

In photoelectric effect threshold wavelength of sodium is 5000Å .Find its work function. [ h=6.6xx10^(-34)Js,c=3xx10^(8)m//s,1eV=1.6xx10^(-19)Js]

Find the maximum velocity of photoelectrons emitted by radiation of frequency 3 xx 10^(15) Hz from a photoelectric surface having a work function of 4.0 eV. Given h=6.6 xx 10^(-34) Js and 1 eV = 1.6 xx 10^(-19) J.

Find the maximum velocity of photoelectrons emitted by radiation of frequency 3 xx 10^(15) Hz from a photoelectric surface having a work function of 4.0 eV. Given h=6.6 xx 10^(-34) Js and 1 eV = 1.6 xx 10^(-19) J.

The stopping potential any material is 1.4Volt.What will its threshold wavelength if the value of incident radiation is 5.6 eV. . [h = 6 .63 xx 10^(-34) Js, C= 3 xx 10^8 m//s, eV = 1.6 xx 10^(-19) J] .

Find the wavelength of an electron having kinetic energy 10 eV. (h = 6.33 xx 10^(-34) J.s, m_(e) = 9 xx 10^(-31) kg)

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))