Lenses & ray diagrams (Edexcel GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
ShowHide
Practise the questions
13 questions from this quiz
How do lenses change images?
How do lenses change images?
By refracting light
What is the shape of a convex lens?
What is the shape of a convex lens?
Thicker in middle than edges
What happens to light entering a convex lens?
What happens to light entering a convex lens?
Refracted towards principal focus
What is the focal length of a lens?
What is the focal length of a lens?
Distance from centre to principal focus
What happens to a ray parallel to the axis through a convex lens?
What happens to a ray parallel to the axis through a convex lens?
Passes through principal focus
What happens to a ray from the principal focus through a convex lens?
What happens to a ray from the principal focus through a convex lens?
Exits parallel to the axis
What is the shape of a concave lens?
What is the shape of a concave lens?
Thicker at edges than centre
What do concave lenses do to light?
What do concave lenses do to light?
Cause it to diverge
Where does a ray parallel to the axis appear to come from in a concave lens?
Where does a ray parallel to the axis appear to come from in a concave lens?
The principal focus
What is a real image?
What is a real image?
Forms when light converges to a point
Which type of lens produces real images?
Which type of lens produces real images?
Only convex/converging lenses
What type of image do concave lenses always produce?
What type of image do concave lenses always produce?
Virtual images
What happens when light enters a more optically dense material?
What happens when light enters a more optically dense material?
Bends towards the normal