A student is revising the basic ideas of image formation by a plane mirror placed vertically on a wall.
(i) State the two laws of reflection of light for a plane mirror.
(ii) Draw a neat ray diagram to show how the entire image of an upright person is obtained in a plane mirror even when the mirror’s length is only half the person’s height.
(iii) Explain, without using any calculations, why increasing the distance between the person and the mirror does not change the minimum length of the mirror required for a full-length view.