Question

How do you tell if an image is upright or inverted?

Answer 1

Hint: The images formed by spherical surfaces can be of two types, that is real and inverted or virtual and erect. The images formed by the converging of light rays from an object form real and inverted images. Similarly, the image which is formed by the diverging light rays from the object will be virtual and erect.




Complete answer:
* If the image is real in the case of mirrors, it will always be inverted. Also in case of mirrors if the image distance is negative hence the image is inverted. These images will form on the same side of the mirror.
* If the image is real in the case of lenses, it will always be inverted. Also in case of lenses if the image distance is positive hence the image is inverted. These images will form on the opposite side of the lens.











* If the image is virtual in the case of mirrors, it will always be upright. Also in case of mirrors if the image distance is positive hence the image is upright. These images will form on the opposite side of the mirror.
* If the image is virtual in the case of lenses, it will always be upright. Also in case of lenses if the image distance is negative hence the image is upright. These images will form on the same side of the lens.











Note: The image formed by the convex mirror and concave lens will always be virtual and erect wherever the object is placed between \[\infty\] and P. The concave mirror and convex lens will form real and inverted images with varying sizes according to the object distance (u) and they can also form virtual images