Choose the correct option for each question. There is only correct response for each question.
The frictional force depends on the nature of the ______on which the object is kept

Options

A. surfaces
B. object
C. force
D. None of them

Answer

To solve the question, we need to identify what the frictional force depends on. Let's analyze the options provided:

1. **Surfaces**
2. **Object**
3. **Force**
4. **None of them**

### Step-by-Step Solution:

1. **Understanding Friction**: Friction is a force that opposes the relative motion of two surfaces in contact. It is important to recognize that the amount of friction depends on certain factors.

2. **Identifying the Factors**: The frictional force primarily depends on two factors:
- The nature of the surfaces in contact (e.g., rough or smooth).
- The normal force acting between the surfaces.

3. **Analyzing the Options**:
- **Surfaces**: This option refers to the characteristics of the surfaces in contact. Since the nature of the surfaces affects how much friction is generated, this option is relevant.
- **Object**: This option is less relevant because while the mass of the object can affect the normal force, it does not directly describe the nature of the friction itself.
- **Force**: This option is vague. While the normal force is a factor, the term "force" does not specifically relate to the nature of the surfaces.
- **None of them**: This option can be eliminated as we have identified relevant factors.

4. **Conclusion**: Since the frictional force does indeed depend on the nature of the surfaces in contact, the correct answer is **Surfaces**.

### Final Answer:
The frictional force depends on the nature of the **surfaces** on which the object is kept.

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