Two identical photocathode receive light of frequencies `f_(1)` and `f_(2)`. If the maximum velocities of the photoelectrons (of mass m) coming out are respectively `v_(1)` and `v_(2)` then:

Options

A. `v_(1)^(2) - v_(2)^(2) = (2h)/m(f_(1) -f_(2))`
B. `v_(1) + v_(2) = [(2h)/m(f_(1) + f_(2)]^(1/2)`
C. `v_(1)^(2) + v_(2)^(2) = (2h)/m(f_(1)+f_(2))`
D. `v_(1) - v_(2) = [(2h)/m(f_(1)-f_(2)]^(1/2)]`