https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:week-4/x37589313f9a4c197:refraction/v/explanation-refraction 2023-07-03T13:44:16.33096147Z Explanation: Refraction Let's look at the explanation of the activity on refraction! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Explanation: Refraction Let's look at the explanation of the activity on refraction! https://cdn.kastatic.org/ka-youtube-converted/3c7jtUhgQ_s.mp4/3c7jtUhgQ_s.mp4 195 Light and Optical Instruments https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:week-4/x37589313f9a4c197:refraction/e/refraction 2026-04-07T23:55:07.30621384Z Refraction Let's solve some problems to better understand refraction. Aakash Bagga exercise https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-79/x37589313f9a4c197:the-human-eye-and-the-colourful-world/v/dispersion-of-light 2023-07-03T13:44:16.33096147Z Dispersion of light What happens when white light passes through a prism! Something, beautiful! Let's find out! Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Dispersion of light What happens when white light passes through a prism! Something, beautiful! Let's find out! https://cdn.kastatic.org/ka-youtube-converted/wC-GzbYG6jI.mp4/wC-GzbYG6jI.mp4 42 Light and Optical Instruments https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-79/x37589313f9a4c197:the-human-eye-and-the-colourful-world/e/prism 2026-04-07T22:59:30.107127435Z Prism Let's solve some problems to better understand prisms and the splitting of light into its constituent colors. Aakash Bagga exercise https://www.khanacademy.org/science/10th-grade-melcs/x1cfbe2e54160ac98:2nd-quarter/x1cfbe2e54160ac98:image-formation-by-lenses/v/image-formation-by-a-convex-lens 2023-07-03T13:44:16.33096147Z Image formation by a convex lens Let's have a look at how images are formed by a convex lens, and also how do the images change, when we change the position of the object. Vibhor Pandey video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Image formation by a convex lens Let's have a look at how images are formed by a convex lens, and also how do the images change, when we change the position of the object. https://cdn.kastatic.org/ka-youtube-converted/ZC4MTZYbjVM.mp4/ZC4MTZYbjVM.mp4 447 Light and Optical Instruments https://www.khanacademy.org/science/kn-class-7-science/x2edacdad2354c760:light/x2edacdad2354c760:lenses/e/convex-and-concave-lenses-middle-school-science 2026-04-07T22:23:57.656416987Z Convex and concave lenses Let's solve some problems to better understand convex and concave lenses Aakash Bagga exercise https://www.khanacademy.org/science/telangana-class-10-physical-sciencein/x1ac9c643dc8dffee:in-in-the-human-eye-and-colourful-world/x1ac9c643dc8dffee:defects-of-vision-and-correction/v/myopia-hypermetropia-class-12-india-physics-khan-academy 2020-09-09T12:23:24Z Myopia & Hypermetropia Let's explore the common defects in the eye, myopia (shortsightedness) and hypermetropia (farsightedness), using ray diagrams. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/U8y0DUElQc-l06Da__vArDvNFsXvTFEHHn4j6q3HaJrMDxhkx6Fki1DFWtQr2aNCXgQ5uu1_mEZJyYig1XCw-UE Myopia & Hypermetropia Let's explore the common defects in the eye, myopia (shortsightedness) and hypermetropia (farsightedness), using ray diagrams. https://cdn.kastatic.org/ka-youtube-converted/dnlS940wez8.mp4/dnlS940wez8.mp4 575 Light and Optical Instruments https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-79/x37589313f9a4c197:the-human-eye-and-the-colourful-world/e/vision-defects 2026-04-07T23:55:07.30621384Z Vision defects Let's solve some problems to better understand vision defects. Aakash Bagga exercise https://www.khanacademy.org/science/in-in-class-12th-physics-india/in-in-ray-optics-and-optical-instruments/in-in-optic-instruments-telescopes-and-microscopes/v/compound-microscope 2020-06-23T07:22:42Z Compound microscope Let's explore the principle of a compound microscope and then logically build one, step by step. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/EdAX8B1E6ym3l9M93uRop70XzWCRsgCFXGMPUDzKV7KniIwgEh2r3hKXmr_nyvZpQJYdx4lzv0a3um171hD0fGI Compound microscope Let's explore the principle of a compound microscope and then logically build one, step by step. https://cdn.kastatic.org/ka-youtube-converted/IeqD7aPKpGo.mp4/IeqD7aPKpGo.mp4 605 Light and Optical Instruments https://www.khanacademy.org/science/in-in-class-12th-physics-india/in-in-ray-optics-and-optical-instruments/in-in-optic-instruments-telescopes-and-microscopes/v/how-telescopes-work 2020-06-23T07:22:36Z How telescopes work Let's explore how telescopes work intuitively using a demo. Then we will talk about some nuances involved in drawing ray diagrams and derive an expression for magnifying power.  Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/awrbH1QdQrZodIYJxThs2DcCM42u7aFEhGXmUN_iMuCQAExkk7C15U-6P073xJSKXMu9CtFEOMv2V-UDN9CVZbJd How telescopes work Let's explore how telescopes work intuitively using a demo. Then we will talk about some nuances involved in drawing ray diagrams and derive an expression for magnifying power.  https://cdn.kastatic.org/ka-youtube-converted/LK8At6NVtoA.mp4/LK8At6NVtoA.mp4 473 Light and Optical Instruments https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-79/x37589313f9a4c197:the-human-eye-and-the-colourful-world/e/optical-instruments 2026-04-08T00:16:02.937952483Z Optical instruments Let's solve some problems to better understand optical instruments. Aakash Bagga exercise