engineering recuitment BARC Stipendiary Trainee Category I 2023 Mock Test Physics Dual Nature: Photon and Matter Waves The Photoelectric Effect
Two identical photocathodes receive the light of frequencies f1 and f2 respectively. If the velocities of the photo-electrons coming out are v1 and v2 respectively, then
1
\({v_1} - {v_2} = {\left[ {\frac{{2h}}{m}\left( {{f_1} - {f_2}} \right)} \right]^{\frac{1}{2}}}\)
2
\({v^2_1} - {v^2_2} ={\frac{{2h}}{m}\left[ {{f_1} - {f_2}} \right]}\)
3
\({v_1} + {v_2} = {\left[ {\frac{{2h}}{m}\left( {{f_1} + {f_2}} \right)} \right]^{\frac{1}{2}}}\)
4
\({v^2_1} + {v^2_2} ={\frac{{2h}}{m}\left[ {{f_1} + {f_2}} \right]}\)