engineering recuitment BARC Stipendiary Trainee Category I 2023 Mock Test Physics Dual Nature: Photon and Matter Waves The Photoelectric Effect
If the threshold wavelength for sodium is 5420Å, then the work function a sodium is (hc = 12375 eV.Å)
1
4.58 eV
2
2.28 eV
3
1.14 eV
4
2.23 eV