\r\n\u003Cstrong>Click \u003C/strong>and \u003Cstrong>drag\u003C/strong> horizontally the focal point F'.\u003C/p>",[2664,2674,2684,2694,2702,2712],{"id":2665,"title":2666,"slug":2667,"mediaType":752,"thumbnailSizes":2668,"thumbnailBackground":773,"publishedAt":2672,"isExpert":761,"goals":2673},665,"Converging lens","converging-lens",{"node_pack":2669,"suggestion":2670,"title":2671},"/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/665-6545f3f90c4a6862096507.webp","/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/665-6545f3f90c4a6862096507.webp","/media-cache/media_thumbnail_title/uploads/media/thumbnails/665-6545f3f90c4a6862096507.webp",{"date":759,"timezone_type":446,"timezone":760},"\u003Cul>\r\n\t\u003Cli>To illustrate the construction of ray diagrams for a converging lens.\u003C/li>\r\n\t\u003Cli>To define vergence of a lens.\u003C/li>\r\n\t\u003Cli>To introduce the property of magnification.\u003C/li>\r\n\u003C/ul>",{"id":2675,"title":2676,"slug":2677,"mediaType":752,"thumbnailSizes":2678,"thumbnailBackground":795,"publishedAt":2682,"isExpert":761,"goals":2683},766,"Diverging lens #2","diverging-lens-2",{"node_pack":2679,"suggestion":2680,"title":2681},"/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/766-6545f43b411ba040448478.webp","/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/766-6545f43b411ba040448478.webp","/media-cache/media_thumbnail_title/uploads/media/thumbnails/766-6545f43b411ba040448478.webp",{"date":759,"timezone_type":446,"timezone":760},"\u003Cul>\r\n\t\u003Cli>To illustrate the effects of a diverging lens on light rays.\u003C/li>\r\n\t\u003Cli>To understand what focal length represents.\u003C/li>\r\n\u003C/ul>",{"id":2685,"title":2686,"slug":2687,"mediaType":752,"thumbnailSizes":2688,"thumbnailBackground":784,"publishedAt":2692,"isExpert":761,"goals":2693},703,"Diverging lens","diverging-lens",{"node_pack":2689,"suggestion":2690,"title":2691},"/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/703-6545f41667d0a346554992.webp","/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/703-6545f41667d0a346554992.webp","/media-cache/media_thumbnail_title/uploads/media/thumbnails/703-6545f41667d0a346554992.webp",{"date":759,"timezone_type":446,"timezone":760},"\u003Cul>\r\n\t\u003Cli>To illustrate the construction of ray diagrams for a diverging lens.\u003C/li>\r\n\u003C/ul>",{"id":1858,"title":2695,"slug":2696,"mediaType":752,"thumbnailSizes":2697,"thumbnailBackground":816,"publishedAt":2701,"isExpert":761,"goals":786},"Quiz: 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simulate a two lens optical system.\u003C/li>\r\n\u003C/ul>",{"id":2713,"title":2714,"slug":2715,"mediaType":752,"thumbnailSizes":2716,"thumbnailBackground":989,"publishedAt":2720,"isExpert":761,"goals":2721},410,"Secondary focal point","secondary-focal-point",{"node_pack":2717,"suggestion":2718,"title":2719},"/media-cache/media_thumbnail_node_pack/uploads/media/thumbnails/410-6545f35313963405297017.webp","/media-cache/media_thumbnail_suggestion/uploads/media/thumbnails/410-6545f35313963405297017.webp","/media-cache/media_thumbnail_title/uploads/media/thumbnails/410-6545f35313963405297017.webp",{"date":759,"timezone_type":446,"timezone":760},"\u003Cul>\r\n\t\u003Cli>To illustrate what the secondary focal point is.\u003C/li>\r\n\u003C/ul>",[2723,2724,2725,2726,2727],"converging lens","focal length","focal point","optic 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