engineering recuitment NFC Chemical Plant Operator Mock Test Physics Dual Nature: Photon and Matter Waves The Photoelectric Effect
If the threshold wavelength for sodium is 5420 Å, then the work function of sodium is
1
3.65 × 10-19 J
2
5.5 × 10-30 J
3
13.65 × 10-13 J
4
6.5 × 10-19 J