Image formed by a plane mirror is :

Question

Accepted Answer

The correct answer is Option 2: "virtual, behind the mirror and of the same size as the object." Let's explore why this is the correct choice and why the other options are incorrect.

### Explanation for Option 2:

1. **Virtual Image**: A plane mirror always forms a virtual image. This means that the image cannot be projected onto a screen because the light rays do not actually converge at the image location. Instead, they only appear to diverge from a point behind the mirror.

2. **Behind the Mirror**: The image formed by a plane mirror appears to be behind the mirror. This is because the light rays reflecting off the mirror seem to come from a point behind the mirror when traced backward.

3. **Same Size as the Object**: The image formed by a plane mirror is of the same size as the object. This is due to the fact that the angles of incidence and reflection are equal, maintaining the proportions of the object in the image.

### Explanation for Why Other Options are Incorrect:

1. **Option 1: Virtual, behind the mirror and enlarged.**
   - While the image is indeed virtual and behind the mirror, it is not enlarged. A plane mirror always produces an image that is the same size as the object, not larger.

2. **Option 3: Real, at the surface of the mirror and enlarged.**
   - This option is incorrect because a plane mirror cannot form a real image. Real images are formed when light rays actually converge at a point, which does not happen with a plane mirror. Additionally, the image is not at the surface of the mirror nor is it enlarged.

3. **Option 4: Real, behind the mirror and of the same size as the object.**
   - This option is incorrect because a real image cannot be formed behind the mirror. Real images are formed in front of the mirror where the light rays converge, which is not the case with a plane mirror. The image is virtual and not real.

In conclusion, Option 2 is the correct answer because it accurately describes the characteristics of the image formed by a plane mirror: virtual, behind the mirror, and of the same size as the object.