Fill in the following blanks with suitable words :
Image formed by a ________mirror is always virtual and smaller in size.

Answer

To solve the question, we need to fill in the blank with the correct type of mirror that forms a virtual and smaller image. Let's break down the solution step by step.

### Step-by-Step Solution:

1. **Identify the Types of Mirrors**:
- There are two main types of mirrors: Plane Mirrors and Spherical Mirrors. Spherical mirrors can be further divided into Concave Mirrors and Convex Mirrors.

2. **Understand Image Formation**:
- **Plane Mirror**: The image formed is of the same size as the object (not smaller).
- **Concave Mirror**: The image can be real, inverted, and of the same size as the object, or it can be larger or smaller depending on the position of the object.
- **Convex Mirror**: The image formed is always virtual, upright, and smaller than the object.

3. **Focus on the Requirements**:
- The question specifically asks for a mirror that forms an image that is always virtual and smaller in size.

4. **Select the Correct Mirror**:
- Since the Convex Mirror is the only type of mirror that always produces a virtual and smaller image, we can fill in the blank with "Convex".

### Final Answer:
Image formed by a **Convex** mirror is always virtual and smaller in size.

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