The stopping potential in an experiment on photoelectric effect is 2V. What is the maximum kinetic energy of the photoelectrons emitted ?

Explanation

To solve the question regarding the maximum kinetic energy of photoelectrons emitted when the stopping potential is given as 2V, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept**: The stopping potential (V₀) in the photoelectric effect is the potential needed to stop the most energetic photoelectrons emitted from a material. The maximum kinetic energy (K.E.) of the emitted photoelectrons can be calculated using the formula:
\[ K.E. = e \cdot V₀ \]
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