Convex & Concave Ray Diagrams (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
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12 questions from this quiz
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Practise the questions
12 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 at edges
What is the shape of a concave lens?
What is the shape of a concave lens?
Thicker at edges, thinner in centre
What happens to light entering a convex lens?
What happens to light entering a convex lens?
Refracted inwards to principal focus
What do concave lenses cause light to do?
What do concave lenses cause light to do?
Diverge (spread out)
What is the focal length of a lens?
What is the focal length of a lens?
Distance from lens centre to focus
In a convex lens, what happens to a ray parallel to the axis?
In a convex lens, what happens to a ray parallel to the axis?
Passes through the principal focus
In a convex lens, what happens to a ray from the principal focus?
In a convex lens, what happens to a ray from the principal focus?
Leaves parallel to the axis
In a concave lens, where do parallel rays appear to come from?
In a concave lens, where do parallel rays appear to come from?
The principal focus
Which type of lens produces real images?
Which type of lens produces real images?
Only convex lenses
Which type of lens always produces virtual images?
Which type of lens always produces virtual images?
Concave lenses
What is a real image?
What is a real image?
Image formed when light comes together