The pressure at the bottom of the sea is

Options

A. greater than at sea level
B. lesser than at sea level
C. same
D. none of these

Explanation

To determine the pressure at the bottom of the sea compared to the pressure at sea level, we can follow these steps:

### Step 1: Understand the Concept of Pressure
Pressure is defined as the force exerted per unit area. In fluids, pressure increases with depth due to the weight of the fluid above.

### Step 2: Identify the Points of Interest
Let's define two points:
- Point A: At sea level
- Point B: At the bottom of the sea

### Step 3: Consider the Factors Affecting Pressure
The pressure at any point in a fluid is influenced by:
- The atmospheric pressure at sea level (P_atm)
- The density of the fluid (ρ)
- The depth of the fluid (h)

### Step 4: Use the Pressure Formula
The formula for pressure at a certain depth in a fluid is given by:
\[ P_B = P_{atm} + \rho g h \]
Where:
- \( P_B \) = Pressure at the bottom of the sea
- \( P_{atm} \) = Atmospheric pressure at sea level
- \( \rho \) = Density of seawater
- \( g \) = Acceleration due to gravity
- \( h \) = Depth of the sea

### Step 5: Analyze the Formula
From the formula, we can see that:
- \( P_B \) is equal to the atmospheric pressure plus the pressure due to the weight of the water column above point B.
- As depth (h) increases, the pressure \( P_B \) also increases.

### Step 6: Conclusion
Since the pressure at the bottom of the sea (P_B) includes both the atmospheric pressure and the additional pressure from the water column, it is greater than the pressure at sea level (P_A).

### Final Answer
The pressure at the bottom of the sea is **greater than at sea level**. Therefore, the correct option is **Option 1**.

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