As the intensity of incident light increases

Options

A. photocurrent increases
B. photocurrent decreases
C. kinetic energy of emitted photoelectrons increases
D. kinetic energy of emitted photoelectrons decreases

Answer

To solve the question regarding the effects of increasing the intensity of incident light, we can break it down into the following steps:

### Step 1: Understand the Concept of Intensity
Intensity of light is defined as the power per unit area. When we say that the intensity of incident light increases, it means that more photons are striking a given area per unit time.

**Hint**: Remember that intensity relates to the number of photons and their energy.

### Step 2: Effect on Number of Photons
As the intensity increases, the number of incident photons also increases. This means that more photons are available to interact with the electrons in the material.

**Hint**: Think about how more photons can lead to more interactions with electrons.

### Step 3: Interaction with Electrons
With more photons hitting the surface, there will be a greater number of interactions between photons and electrons. This leads to an increase in the number of electrons that are emitted from the material.

**Hint**: Consider the photoelectric effect and how photons can cause electrons to be emitted.

### Step 4: Effect on Photoelectric Current
The photoelectric current is directly related to the number of electrons emitted. Since the number of emitted electrons increases with the increase in the number of incident photons, the photoelectric current will also increase.

**Hint**: Recall the formula for current, which is related to charge and time.

### Step 5: Kinetic Energy of Emitted Electrons
The kinetic energy of the emitted electrons depends on the energy of the individual photons and the work function of the material. Increasing the intensity does not change the energy of individual photons (which is determined by their frequency). Therefore, the kinetic energy of the emitted electrons remains unchanged.

**Hint**: Remember that kinetic energy is related to the energy of each photon and the work function, not the intensity.

### Conclusion
From the analysis:
- The photoelectric current increases with increasing intensity (Option A is correct).
- The kinetic energy of emitted electrons does not change with increasing intensity (Options C and D are incorrect).

### Final Answer
The correct answer is that as the intensity of incident light increases, the photoelectric current increases, but the kinetic energy of emitted electrons remains the same.

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