Answer: 0.
- A hbar
- B 2hbar
- C 0
- D hbar/2
Correct answer: C. 0
Explanation: For l=0 (s orbital): L = sqrt(l(l+1)) hbar = 0. S orbitals have zero orbital angular momentum.
In the photoelectric setup, light striking the metal plate ejects electrons that cross the evacuated tube to the collector, producing a measurable current on the ammeter.
Concept context
Photoelectric effect, de Broglie waves, Bohr's model, atomic spectra.