Question 14
Modern PhysicsIn photoelectric effect, which of the following graphs correctly represents the graph of stopping potential V0 against frequency f of incident light?
- A.Graph A
- B.Graph B
- C.Graph C
- D.Graph D
Show the answer and explanation
Answer: B (Graph B)
Explanation
eV0 = hf − W, so V0 against f is a straight line of positive slope that cuts the f-axis at the threshold frequency and, extended, has a negative intercept on the V0 axis (graph B).