Lenses (Edexcel GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How do lenses form images?
How do lenses form images?
By refracting light
What effect does a converging lens have on parallel light rays?
What effect does a converging lens have on parallel light rays?
Causes rays to converge at a point
What effect does a diverging lens have on parallel light rays?
What effect does a diverging lens have on parallel light rays?
Causes rays to spread out
Where is the principal focus of a converging lens?
Where is the principal focus of a converging lens?
Where parallel rays meet
Where does the principal focus of a diverging lens appear to be?
Where does the principal focus of a diverging lens appear to be?
Behind the lens
What is a real image?
What is a real image?
Light rays actually come together
Can a real image be projected onto a screen?
Can a real image be projected onto a screen?
Yes
What is a virtual image?
What is a virtual image?
Rays appear to come from a different location
Can a virtual image be projected onto a screen?
Can a virtual image be projected onto a screen?
No
What happens to lens power as curvature increases?
What happens to lens power as curvature increases?
Power increases
How does focal length relate to lens power?
How does focal length relate to lens power?
Shorter focal length = more powerful
How can you make a lens more powerful?
How can you make a lens more powerful?
Increase its curvature