When pressure is applied through a piston at the top of a closed tube containing water, the pressure is transmitted to

Options

A. Only the bottom of container
B. All directions
C. Only the side faces and the bottom of the container
D. None of these

Explanation

To solve the question "When pressure is applied through a piston at the top of a closed tube containing water, the pressure is transmitted to," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pressure Transmission in Fluids**:
- When pressure is applied to a fluid in a closed container, the pressure is transmitted throughout the fluid. This is a fundamental principle of hydraulics, known as Pascal's Law.

2. **Analyzing the Setup**:
- In this scenario, we have a closed tube filled with water and a piston at the top. When the piston is pushed down, it exerts pressure on the water.

3. **Identifying the Direction of Pressure Transmission**:
- According to Pascal's Law, the pressure applied to a confined fluid is transmitted undiminished in all directions throughout the fluid. This means that the pressure will affect not only the bottom of the container but also the sides.

4. **Evaluating the Options**:
- Option 1: Only the bottom of the container - This is incorrect because pressure is transmitted in all directions, not just downwards.
- Option 2: All directions - This is correct as per Pascal's Law.
- Option 3: Only the side faces and the bottom of the container - This is also incorrect as it excludes the upward direction.
- Option 4: None of these - This is incorrect since we have a valid option.

5. **Conclusion**:
- The correct answer is **Option 2: All directions**. When pressure is applied through a piston at the top of a closed tube containing water, the pressure is transmitted in all directions.