Explanation:
According to photoelectric equation,
\({\rm{hv = h}}{{\rm{v}}_{\rm{0}}}{\rm{ + K}}{\rm{.E}}\)
\({\rm{K}}{\rm{.E = hv - h}}{{\rm{v}}_{\rm{0}}}\)
The plot is drawn between the K.E. and frequency gives a straight line with slope and intercept
\(\left( {{\rm{ - h}}{{\rm{v}}_{\rm{0}}}} \right)\)
