The image of an object formed by side glass of motor vehicles is -

Question

Accepted Answer

The image of an object formed by the side glass of motor vehicles is described by Option 3: erect, virtual, and smaller in size than the object. Here's a detailed explanation supporting this:

1. **Explanation for Option 3 (Correct Answer):**
   - **Erect:** The image formed by the side mirrors of vehicles is upright, meaning it maintains the same orientation as the object. This is a characteristic of virtual images formed by mirrors.
   - **Virtual:** Side mirrors in vehicles are typically convex mirrors. Convex mirrors always form virtual images. A virtual image is one where the light rays appear to diverge from a point behind the mirror, and it cannot be projected onto a screen.
   - **Smaller in Size:** Convex mirrors have the property of reducing the size of the image compared to the actual object. This allows drivers to have a wider field of view, which is crucial for safety in traffic.

2. **Explanation for Why Other Options are Incorrect:**
   - **Option 1 (Erect, real, and smaller in size than the object):** Real images are formed when light rays converge and can be projected onto a screen. Convex mirrors do not form real images; they form virtual images. Therefore, this option is incorrect.
   - **Option 2 (Erect, real, and bigger in size than the object):** As mentioned, convex mirrors do not form real images, and they certainly do not magnify the image. This option is incorrect because it describes properties that are not applicable to convex mirrors.
   - **Option 4 (Erect, virtual, and bigger in size than the object):** While the image is indeed virtual and erect, convex mirrors do not enlarge the image; they make it smaller to provide a wider field of view. Hence, this option is incorrect.

In conclusion, Option 3 is the correct answer because it accurately describes the properties of the image formed by the side mirrors of motor vehicles, which are typically convex mirrors.