The work function for Caesium atom is 1.9 eV. Calculatethe threshold wavelength of the radiation. If Caesium is irradiated with a wavelength 500 nm, calculate the kinetic energy and the velocity of the ejected electron.

The work function for Caesium atom is 1.9 eV. Calculatethe threshold w

1.	The work function for Caesium atom is 1.9 eV. Calculatethe threshold wavelength of the radiation. If Caesium is irradiated with a wavelength 500 nm, calculate the kinetic energy and the velocity of the ejected electron.
Answer» SOLUTION :Threshold wavelength `lambda_0=c/V_0=(3xx10^5)/(4.594xx10^14)=6.53xx10^(-7)m=(6.53xx10^(-7))/(10^(-9))nm=653nm`