A model eye has a screen representing the retina. The screen is at the position found in an eyeball of normal length, and the model lens has a normal thickness.
Light rays from a distant lamp cross before they reach the screen.
Which combination describes the cornea of the model eye and the eye defect the model represents?
The cornea is more curved than normal and the model represents long-sightedness.
The cornea is more curved than normal and the model represents short-sightedness.
The cornea is flatter than normal and the model represents long-sightedness.
The cornea is flatter than normal and the model represents short-sightedness.
102 exam-style questions on Edexcel GCSE Biology 2.4 The eye, covering 2.4.1 Structure and function of the eye and 2.4.2 Eye defects and their correction. Each one has a worked solution and a mark scheme showing where the marks go.