RE-NEET2026Physics-Modern Physics
RE-NEET 2026 Physics Photoelectric Effect MCQ Question
Type: MCQ-conceptual-Hard-Class 12
A ray of light with wavelength λ is incident on three different photo-electric cells namely 1, 2 and 3. The threshold wavelength of these photo-electric cells are λ₁, λ₂, and λ₃, respectively and the magnitude of stopping potentials of these cells are V₁, V₂ and V₃, respectively. The relation between λ and threshold wavelengths are λ₁ < λ, λ₂ > λ and λ₃ >> λ. The correct option is:
A
V₁ = 0, V₂ = V₃
B
V₁ > V₂, V₃ = 0
C
V₁ < V₂, V₃ = 0
D
V₁ = 0, V₂ < V₃
Correct Answer
Option B
Detailed Explanation
For cell 1, λ > λ₁, so photoelectric effect occurs and V₁ > 0. For cell 2, λ < λ₂, so no photoelectric effect and V₂ = 0. For cell 3, λ << λ₃, so no photoelectric effect and V₃ = 0.
Found an issue with this question?