Light described at a place by the equation `E = (100V//m) xx [sin (5 xx 10^(15) s^(-1)) t +sin (8 xx 10^(15) s^(-1))t]`
falls on a metal surface having work function `2.0eV`. Calculate the maximum kinetic energy of the similar having work function `1.9eV`

Options

A. 3.27 eV
B. 5 eV
C. 1.27 eV
D. 2.5 eV

Explanation

`E=100sin5xx10^(15)t+100sin8xx10^(15)t`
`v_(max)=(8xx10^(15))/(2pi)`
`,K.E_(max)=h_(max)-w,K.E_(max)=3.27eV`