Question

A full-length image of a distant tall building can definitely be seen by using?

Answer 1

Convex mirror

1. As we all know, a convex mirror's image is always smaller than the object's size, resulting in an erect and fictitious image of the thing.
2. A diverging mirror is another name for it.
3. It is also utilized as a rear view mirror in vehicles because it covers a large area behind the mirror.
4. Demonstrating with the help of a diagram

A full-length image of a distant tall building using a convex mirror

1. A ray of light $AD$ running parallel to the major axis is reflected along with $DX$ when a tall building $AB$ is at a distance from the mirror. When $DX$ is traced backwards, it appears to come from $F$.
2. Another ray, $AE$, is reflected back along with $EA$ as it travels towards the centre of curvature ($C$). When created backwards, these two diverging rays $DX$ and $EA$ appear to cross at $A\text{'}$.
3. As a result, the image of the building generated is imaginary, upright, decreased and behind the mirror.
4. Using a convex mirror, the full-length image of the distant tall building may be clearly viewed.

Hence, a full-length image of a distant tall building can definitely be seen by using a convex mirror.