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 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

Calculate the threshold frequency of a photon from a photosensitive surface of work function 0.2 eV . Take h=6.6xx10^(-34)Js.

Calculate the kinetic energy of photoelectrons in eV emitted on shining light of wavelength 6.2xx10^(-8)m on a metal surface. The work fuction of metal is 0.1eV. Given: h = 6.6xx10^(-34) J.s .

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) )

When light of frequency 6 xx 10^(14) Hz is incident on a photosensitive metal, the kinetic energy of the photoelectron ejected is 2e V. Calculate the kinetic energy of the photoelectron in eV when light to frequency 5 xx 10^(14) Hz is incident on the same metal. Given Planck's constant, h = 6.625 xx 10^(-34) Js , 1 eV = 1.6 xx 10^(-19) .

The frequency of a Photon having energy 100 eV is ...... Hz. (take h = 6.62 xx 10^(-34) Js, 1eV = 1.6 xx 10^(-19) J)

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

Light of frequency 6 xx 10^(14) Hz is incident on a metal whose work function is 2eV (h=6.63 xx 10^(-34) Js,leV =1.6 xx 10^(-19)J) . The maximum energy of electrons emitted will be:

Frequency of photon having 100 eV energy is ……Hz [ h=6.62xx10^(-34)Js,1eV=1.6xx10^(-19)Js]

If a photoemissive surface has a threshold frequency of . 6 xx 10^(14)Hz , calculate the energy of the photons in eV. Given h=6.6 xx 10^(-34)Js .