A person moves from reading a book in bright light to watching a distant object in dim light.
Which combination of changes occurs in a healthy eye?
The pupil becomes larger and the lens becomes thinner.
The pupil becomes larger and the lens becomes thicker.
The pupil becomes smaller and the lens becomes thinner.
The pupil becomes smaller and the lens becomes thicker.
42 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.