GRAPH SCALE A simple understanding of scale in the graph. Many of you have asked me, what it means by 1cm to 1 unit, 2cm to 1 unit, 2 cm to 3 units and etc? Take a look at the explanation below. Simple explanation for IGCSE students

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CONVEX LENSES There are two types of ray diagrams discussed in IGCSE. Concave Lenses Ray Diagrams Convex Ray Diagrams Looking at the table below, we can understand that there are different applications for convex lenses. Please look at the diagram for a better understanding.