The eye lens is held in position by __________.
Draw a ray diagram to show how a converging lens is used as a magnifying glass to observe a small object. Mark on your diagram the foci of the lens and the position of the eye.
Draw a diagram to show how a converging lens held close to the eye acts as a magnifying glass. Why is it usual to choose a lens of short focal length for this purpose rather than one of long focal length ?
The near point of a hypermetropic eye is 75 cm from the eye. What is the power of the lens required to read a book held at 25 cm from the eye?