During a vision screening, a person views some print held nearby. The print appears blurred without a trial lens but becomes sharp when a convex trial lens is placed in front of the eye.
Which statement explains why the print appears blurred without the trial lens?
The light is scattered by a cloudy lens, so it cannot form a sharp image.
The light is focused on the retina, but the cone cells cannot detect its colour.
The light is refracted too much, so it would focus in front of the retina.
The light is not refracted enough, so it would focus behind the retina.
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.