MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Earn 100

What is meant by the principal focus (or focal point) of a converging lens?

Important Questions on Light

HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.27
What is the difference between a real image and a virtual image?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.28
Look at the ray diagram shown in the Figure. How does it show that the image formed by a converging lens is inverted?
Question Image
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.29
Look at Figure,
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How can you tell from the diagram that the image formed by the magnifying glass is a virtual image?
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.3
A converging lens has focal length 5 cm. An object is placed 3 cm from the centre of the lens, on the principal axis. Draw an accurate ray diagram to represent this.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.3
A converging lens has a focal length 5 cm. An object is placed 3 cm from the centre of the lens, on the principal axis. Use your diagram. To determine the distance of the virtual image formed from the lens.
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EASY
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>End-of-chapter questions>Q 1
Draw a diagram to show how a ray of light is reflected by a plane mirror. Mark the normal and the angles of incidence and reflection. 
EASY
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>End-of-chapter questions>Q 1
Write an equation that shows how angle of reflection and angle of incidence are related by the law of reflection. Write the equation both in words and in symbols. 
EASY
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>End-of-chapter questions>Q 3
Draw a diagram to show how a ray of light is refracted when it passes from one material to another. Mark the normal and the angles of incidence and refraction.