What is refraction?
Choose 1 answer
{"type":"multi-choice","id":"2982","dataJson":{"type":"multi-choice","slide_id":15779,"key":2982,"prompt":"\u003cp\u003eWhat is refraction?\u003c/p\u003e","validResponse":[3188],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"a lens that is thinner across the middle and causes rays to diverge","value":3186,"fileboyId":"b5478224-142a-41c5-8a79-4b4f7d2feed9"},{"label":"the point at which parallel rays or waves converge after reflection or refraction, or the point from which diverging rays or waves appear to proceed","value":3189,"fileboyId":"74a9590b-3725-477f-96d4-d518eebf16b4"},{"label":"a lens that is thicker across its middle; it will converge rays of light that travel parallel to its principal axis","value":3187,"fileboyId":"a112f7a8-6c32-440c-b7f0-8cb395613b8e"},{"label":"two lines which are side by side and always the same distance apart","value":3190,"fileboyId":"b0386756-d27c-4a1e-8080-baed823e9ee7"},{"label":"the changing in direction of a wave due to a change in medium","value":3188,"fileboyId":"fd234fc3-4088-489e-9a9e-1a66cb4ff811"}],"question_data":{"body":"Refraction occurs whenever light enters a different medium (material) at an angle and changes direction. What do we use refraction for?","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/0ba4ab61-7b43-4afa-9ac8-230a0a10cb76?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What is a convex lens?
Choose 1 answer
{"type":"multi-choice","id":"2983","dataJson":{"type":"multi-choice","slide_id":15782,"key":2983,"prompt":"\u003cp\u003eWhat is a convex lens?\u003c/p\u003e","validResponse":[3187],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"two lines which are side by side and always the same distance apart","value":3190,"fileboyId":"b0386756-d27c-4a1e-8080-baed823e9ee7"},{"label":"a lens that is thinner across the middle and causes rays to diverge","value":3186,"fileboyId":"b5478224-142a-41c5-8a79-4b4f7d2feed9"},{"label":"the changing in direction of a wave due to a change in medium","value":3188,"fileboyId":"fd234fc3-4088-489e-9a9e-1a66cb4ff811"},{"label":"the point at which parallel rays or waves converge after reflection or refraction, or the point from which diverging rays or waves appear to proceed","value":3189,"fileboyId":"74a9590b-3725-477f-96d4-d518eebf16b4"},{"label":"a lens that is thicker across its middle; it will converge rays of light that travel parallel to its principal axis","value":3187,"fileboyId":"a112f7a8-6c32-440c-b7f0-8cb395613b8e"}],"question_data":{"body":"A convex lens is sometimes described as a converging lens as it refracts light to a singular point (focal point). The rays of light converge at the focal point.","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/06bfbeb3-ecc4-4b88-9703-8b9c41846f92?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What is a concave lens?
Choose 1 answer
{"type":"multi-choice","id":"2984","dataJson":{"type":"multi-choice","slide_id":15779,"key":2984,"prompt":"\u003cp\u003eWhat is a concave lens?\u003c/p\u003e","validResponse":[3186],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"the changing in direction of a wave due to a change in medium","value":3188,"fileboyId":"fd234fc3-4088-489e-9a9e-1a66cb4ff811"},{"label":"two lines which are side by side and always the same distance apart","value":3190,"fileboyId":"b0386756-d27c-4a1e-8080-baed823e9ee7"},{"label":"a lens that is thinner across the middle and causes rays to diverge","value":3186,"fileboyId":"b5478224-142a-41c5-8a79-4b4f7d2feed9"},{"label":"a lens that is thicker across its middle; it will converge rays of light that travel parallel to its principal axis","value":3187,"fileboyId":"a112f7a8-6c32-440c-b7f0-8cb395613b8e"},{"label":"the point at which parallel rays or waves converge after reflection or refraction, or the point from which diverging rays or waves appear to proceed","value":3189,"fileboyId":"74a9590b-3725-477f-96d4-d518eebf16b4"}],"question_data":{"body":"Refraction occurs whenever light enters a different medium (material) at an angle and changes direction. What do we use refraction for?","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/0ba4ab61-7b43-4afa-9ac8-230a0a10cb76?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What does focal point mean?
Choose 1 answer
{"type":"multi-choice","id":"2981","dataJson":{"type":"multi-choice","slide_id":15782,"key":2981,"prompt":"\u003cp\u003eWhat does focal point mean?\u003c/p\u003e","validResponse":[3189],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"the changing in direction of a wave due to a change in medium","value":3188,"fileboyId":"fd234fc3-4088-489e-9a9e-1a66cb4ff811"},{"label":"the point at which parallel rays or waves converge after reflection or refraction, or the point from which diverging rays or waves appear to proceed","value":3189,"fileboyId":"74a9590b-3725-477f-96d4-d518eebf16b4"},{"label":"a lens that is thinner across the middle and causes rays to diverge","value":3186,"fileboyId":"b5478224-142a-41c5-8a79-4b4f7d2feed9"},{"label":"two lines which are side by side and always the same distance apart","value":3190,"fileboyId":"b0386756-d27c-4a1e-8080-baed823e9ee7"},{"label":"a lens that is thicker across its middle; it will converge rays of light that travel parallel to its principal axis","value":3187,"fileboyId":"a112f7a8-6c32-440c-b7f0-8cb395613b8e"}],"question_data":{"body":"A convex lens is sometimes described as a converging lens as it refracts light to a singular point (focal point). The rays of light converge at the focal point.","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/06bfbeb3-ecc4-4b88-9703-8b9c41846f92?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
What does the parallel mean?
Choose 1 answer
{"type":"multi-choice","id":"2980","dataJson":{"type":"multi-choice","slide_id":15775,"key":2980,"prompt":"\u003cp\u003eWhat does the parallel mean?\u003c/p\u003e","validResponse":[3190],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"two lines which are side by side and always the same distance apart","value":3190,"fileboyId":"b0386756-d27c-4a1e-8080-baed823e9ee7"},{"label":"the point at which parallel rays or waves converge after reflection or refraction, or the point from which diverging rays or waves appear to proceed","value":3189,"fileboyId":"74a9590b-3725-477f-96d4-d518eebf16b4"},{"label":"a lens that is thicker across its middle; it will converge rays of light that travel parallel to its principal axis","value":3187,"fileboyId":"a112f7a8-6c32-440c-b7f0-8cb395613b8e"},{"label":"the changing in direction of a wave due to a change in medium","value":3188,"fileboyId":"fd234fc3-4088-489e-9a9e-1a66cb4ff811"},{"label":"a lens that is thinner across the middle and causes rays to diverge","value":3186,"fileboyId":"b5478224-142a-41c5-8a79-4b4f7d2feed9"}],"question_data":{"body":"Imagine a car crossing a mud track. When the front wheels reach the slippery mud, they are not able to pull the car forward at the same speed, so the whole vehicle slows down.","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/b1209e6c-d0a4-4396-9e67-a6413f9160ff?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}
Look at the slide below to work out the answer.