From the photoelectric effect experiment, folloing observations are made.Identify which of these are correct. A The stoping potential depends only on the work function of the metal.B The saturation current increases as the intentsity of incident light incrreases CThe maximum kinetic energy of a photo electron dependson the intensity of the incidebnt light D Photoelectric effect can be explained using wave theory of light. choose the correct answer from the options given below:

Options

A. A,B,D only
B. B only
C. A,C,D only
D. B,C only

Answer

To solve the question regarding the observations made from the photoelectric effect experiment, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A: The stopping potential depends only on the work function of the metal.**
- **Analysis:** The stopping potential (V₀) is related to the maximum kinetic energy (K.E.) of the emitted photoelectrons, which is given by the equation:
\[ K.E. = eV₀ = hf - \phi \]
where \(hf\) is the energy of the incident photons and \(\phi\) is the work function of the metal. The stopping potential depends on both the energy of the incident light (frequency) and the work function, not solely on the work function.
- **Conclusion:** This statement is **incorrect**.

2. **Statement B: The saturation current increases as the intensity of incident light increases.**
- **Analysis:** The saturation current is directly proportional to the number of photoelectrons emitted, which in turn is proportional to the intensity of the incident light. As the intensity increases, more photons hit the surface, leading to more emitted electrons and thus a higher saturation current.
- **Conclusion:** This statement is **correct**.

3. **Statement C: The maximum kinetic energy of a photoelectron depends on the intensity of the incident light.**
- **Analysis:** The maximum kinetic energy of the emitted photoelectrons is determined by the energy of the incident photons (related to their frequency) and the work function of the metal. It does not depend on the intensity of the light, which only affects the number of emitted electrons.
- **Conclusion:** This statement is **incorrect**.

4. **Statement D: Photoelectric effect can be explained using wave theory of light.**
- **Analysis:** The wave theory of light cannot adequately explain the photoelectric effect, as it fails to account for the quantization of light into photons. The photoelectric effect is better explained by the particle theory of light, where light consists of discrete packets of energy (photons).
- **Conclusion:** This statement is **incorrect**.

### Final Answer:
The only correct statement from the given observations is **B**: The saturation current increases as the intensity of incident light increases.