The surface of a metal is illuminated alternately with photons of energies E_(1) = 4 eV and E_(2) = 2.5 eV respectively. The ratio of maximum speeds of the photoelectrons emitted in the two cases is 2. The work function of the metal in (eV) is ________.
Sodium and copper have work functions 2.3 eV and 4.5 eV respectively . Then the ratio of the wavelength is nearest
The work functions of potassium and sodium are 4.5 eV and 2.3 eV respectively. The approximate ratio of their threshold wavelength will be -
Two metals a and b have work function 5 eV and 7 eV , respectively . Which metal has a lower threshold wavelength ?
Sodium and copper have work functions 2.3 eV and 4.6 eV respectively . Then the ratio of threshold wavelengths are respectively.
Two metals A and B have work function 2 eV and 4 eV , respectively . Which metal has a lower threshold wavelength for photoelectric effect ?
AAKASH INSTITUTE-ALTERNATING CURRENT -Assignment (Section-J) (Aakash Chailengers Questions)
