A________is a flat, smooth reflective surface.

Options

A. Spherical mirror
B. Plane mirror
C. Inverted mirror
D. All of these

Answer

To answer the question "A ________ is a flat, smooth reflective surface," we can follow these steps:

### Step 1: Understand the Definition
We need to identify what type of surface is described as "flat" and "smooth" and is also reflective.

### Step 2: Consider Different Types of Mirrors
- **Spherical Mirrors**: These include concave and convex mirrors. They are not flat; they have a curved surface.
- **Plane Mirrors**: These are defined as flat mirrors with a smooth reflective surface.

### Step 3: Identify the Correct Answer
Since a plane mirror is flat and has a smooth reflective surface, it fits the description provided in the question.

### Conclusion
The answer to the question is: A **Plane Mirror** is a flat, smooth reflective surface.

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