While capturing solar energy for commercial purposes we use

Options

A. Parabolic mirrors
B. Plane mirrors
C. Convex mirrors
D. Concave mirrors

Answer

To solve the question regarding the use of mirrors for capturing solar energy for commercial purposes, we can break it down step by step:

### Step 1: Understanding the Types of Mirrors
We need to consider the types of mirrors available: parabolic mirrors, spherical mirrors (concave and convex), and plane mirrors. Each type has different properties regarding how they reflect light.

**Hint:** Remember that the shape of the mirror affects how light rays converge or diverge.

### Step 2: Analyzing Parabolic Mirrors
Parabolic mirrors are designed such that parallel rays of light (like those from the sun) converge at a single point known as the focus. This property makes them particularly effective for concentrating solar energy.

**Hint:** Focus on the definition of a parabolic mirror and its ability to concentrate light.

### Step 3: Analyzing Spherical Mirrors
Spherical mirrors, on the other hand, have a different focal property. The focal point of a spherical mirror depends on the angle of incidence, which means that light rays coming from infinity do not converge at a single point. Instead, they may focus at different points depending on their angle of incidence.

**Hint:** Consider how the curvature of the mirror affects the focal point.

### Step 4: Evaluating Other Mirrors
Concave mirrors can focus light, but they are not as efficient as parabolic mirrors for solar energy applications. Convex mirrors diverge light and cannot focus it. Plane mirrors reflect light without focusing it.

**Hint:** Think about the practical applications of each type of mirror in solar energy capture.

### Step 5: Conclusion
Based on the analysis, parabolic mirrors are the most suitable for capturing solar energy for commercial purposes, as they can effectively focus sunlight onto a specific point, making them ideal for applications like solar cookers and solar power plants.

**Final Answer:** Parabolic mirrors are used for capturing solar energy for commercial purposes.