When radiations of wavelength `lamda_(1) and lamda_(2)` are incident on certain photosensitive material, the energies of electron ejected ar `E_(1) and E_(2)` respectively, such that `E_(1)gt E_(2),` Then Planck's constant 'h' is (C = velocity of light)

Options

A. `((E_(1)-E_(2))(lambda_(1)-lambda_(2)))/(c(lambda_(1)*lambda_(2)))`
B. `((E_(1)-E_(2))lambda_(1)c)/((lambda_(1)-lambda_(2))lambda_(2))`
C. `((E_(1)-E_(2))lambda_(1)lambda_(2))/(c(lambda_(2)-lambda_(1)))`
D. `((lambda_(2)-lambda_(1))c)/((E_(1)-E_(2))lambda_(1)*lambda_(2))`

Explanation

`(c ) ((E_(1)-E_(2))lambda_(1)lambda_(2))/(c(lambda_(2)-lambda_(1)))`