Statement-1 : Pressure on a body is always compressive while stress can be compressive or tensile.
And
Statement-2 : Pressure is always normal to the area while stress can be either normal or tangential.

Options

A. a.Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
B. b.Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for Statement-1
C. c.Statement-1 is True, Statement-2 is False
D. d.Statement-1 is False, Statement-2 is True

Answer

To analyze the statements and determine their validity, we will break down the concepts of pressure and stress step by step.

### Step 1: Understanding Pressure
- **Definition**: Pressure is defined as the force applied per unit area. Mathematically, it can be expressed as:
\[ \text{Pressure} (P) = \frac{\text{Force} (F)}{\text{Area} (A)} \]
- **Nature**: Pressure acts perpendicular (normal) to the surface of the body and is always compressive in nature. This means it always pushes inward on the surface.

### Step 2: Understanding Stress
- **Definition**: Stress is defined as the internal resistance offered by a material to deformation. It is also calculated as:
\[ \text{Stress} (\sigma) = \frac{\text{Restoring Force} (F_r)}{\text{Cross-sectional Area} (A)} \]
- **Nature**: Stress can be compressive, tensile, or shear. This means it can either pull apart (tensile) or push together (compressive), and can also act parallel to the surface (shear).

### Step 3: Analyzing Statement 1
- **Statement 1**: "Pressure on a body is always compressive while stress can be compressive or tensile."
- This statement is true. Pressure is always compressive, while stress can be of different types (compressive, tensile, or shear).

### Step 4: Analyzing Statement 2
- **Statement 2**: "Pressure is always normal to the area while stress can be either normal or tangential."
- This statement is also true. Pressure acts perpendicular to the surface, while stress can act in various directions, including normal (perpendicular) and tangential (parallel).

### Conclusion
- Both statements are true, and Statement 2 provides a correct explanation for Statement 1. Thus, the answer is that both statements are correct.

### Final Answer
- **Both Statement 1 and Statement 2 are true. Statement 2 is the correct explanation of Statement 1.**

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