Assertion: Pressure on the concave side of the liquid will be greater than pressure on the convex side if the liquid surface is curved.
Reason: Excess pressure depends on the angle of contact of the liquid surface with the solid surface.

Options

A. If both assertion and reason are correct and remad is a correct explanation of the assertion.
B. If both assertion and reason are correct bat reason is not the correct explanation of assertion.
C. If assertion is correct but reason is incorrect.
D. If assertion is incorrect but reason is correct.

Answer

To solve the given question, we need to analyze the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that the pressure on the concave side of a liquid will be greater than the pressure on the convex side if the liquid surface is curved.

- This is based on the principle of excess pressure in a curved liquid surface, which can be described by the formula:

\[ \Delta P = \frac{2T}{R} \]

where \( \Delta P \) is the excess pressure, \( T \) is the surface tension of the liquid, and \( R \) is the radius of curvature. For a concave surface, the pressure inside (concave side) is greater than the pressure outside (convex side).

### Step 2: Understand the Reason
The reason states that excess pressure depends on the angle of contact of the liquid surface with the solid surface.

- This statement is incorrect. The excess pressure in a liquid surface primarily depends on the surface tension and the radius of curvature, not on the angle of contact. The angle of contact affects the shape of the liquid surface but does not directly influence the excess pressure.

### Step 3: Conclusion
Based on the analysis:
- The assertion is **correct** because the pressure on the concave side is indeed greater than on the convex side.
- The reason is **incorrect** because it misstates the factors affecting excess pressure.

Thus, the correct answer is that the assertion is correct, but the reason is incorrect.

### Final Answer:
Assertion is correct, but reason is incorrect.

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