MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Earn 100

Sketch a diagram to show how a ray of light can trace along a curved glass fibre. Indicate the points where total internal reflection occurs.

Important Questions on Light

HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.22
Why must high-purity glass be used for optical fibres used in telecommunications?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.23
Draw a diagram to show the difference in shape between a converging lens and a diverging lens.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.24
Draw a ray diagram to show how a converging lens focuses parallel rays of light.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.25
Draw a diagram to show how a converging lens can produce a beam of parallel rays of light?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 13 - Light>Questions>Q 13.26
What is meant by the principal focus (or focal point) of a converging lens?
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,
. Question Image
How can you tell from the diagram that the image formed by the magnifying glass is a virtual image?