iGCSE Physics - 3.2.3 Thin Lenses CORE

**This Powerpoint specifically covers all criteria for –
Unit 3.2.3 Thin Lenses CORE
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Describe the action of thin converging and thin diverging lenses on a parallel beam of light

Define and use the terms focal length, principal axis and principal focus (focal point)

Draw and use ray diagrams for the formation of a real image by a converging lens

Describe the characteristics of an image using the terms enlarged/same size/diminished, upright/inverted and real/virtual

Know that a virtual image is formed when diverging rays are extrapolated backwards and does not form a visible projection on a screen

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a FREE pdf version which can be used as a handout for students and can be easily uploaded to any school’s VLE system.
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