Grade 12 Physics Photoelectric effect Full lesson

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Optical phenomena and material properties • In this lesson you will learn the necessary theory on the Photoelectric effect: • the duality of light • the wave nature and the particle nature of light • what is a photon • how to calculate the Energy of a photon • how to calculate the work function of a metal • what is the threshold frequency • how does intensity affect the Photo-current • All of this compressed into one lesson. • Finally I also tackle one past-exam question from SC/NSC 2019 Exam • Enjoy!!!","styleRuns":[{"startIndex":0,"length":124,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"},{"startIndex":124,"length":22,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"},{"startIndex":146,"length":50,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"},{"startIndex":196,"length":17,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"},{"startIndex":213,"length":40,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"},{"startIndex":253,"length":46,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"},{"startIndex":299,"length":32,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"},{"startIndex":331,"length":44,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"},{"startIndex":375,"length":118,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"}],"paragraphStyleRuns":[{"startIndex":124,"length":251,"listGroup":{"listType":"LIST_TYPE_BULLET","listItems":[{"listType":"LIST_TYPE_BULLET","startIndex":124,"length":22},{"listType":"LIST_TYPE_BULLET","startIndex":146,"length":50},{"listType":"LIST_TYPE_BULLET","startIndex":196,"length":17},{"listType":"LIST_TYPE_BULLET","startIndex":213,"length":40},{"listType":"LIST_TYPE_BULLET","startIndex":253,"length":46},{"listType":"LIST_TYPE_BULLET","startIndex":299,"length":32},{"listType":"LIST_TYPE_BULLET","startIndex":331,"length":44}]}},{"length":376}]},"headerRuns":[{"startIndex":0,"length":124,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"},{"startIndex":124,"length":22,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"},{"startIndex":146,"length":50,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"},{"startIndex":196,"length":17,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"},{"startIndex":213,"length":40,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"},{"startIndex":253,"length":46,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"},{"startIndex":299,"length":32,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"},{"startIndex":331,"length":44,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"},{"startIndex":375,"length":118,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"}]}},{"itemSectionRenderer":{"contents":[{"continuationItemRenderer":{"trigger":"CONTINUATION_TRIGGER_ON_ITEM_SHOWN","continuationEndpoint":{"clickTrackingParams":"CJYCELsvGAIiEwjV9Z_B59-LAxVc4EIFHXysCtc=","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/next"}},"continuationCommand":{"token":"Eg0SCzVLOXRqOWd4ZzQ4GAYyJSIRIgs1Szl0ajlneGc0ODAAeAJCEGNvbW1lbnRzLXNlY3Rpb24%3D","request":"CONTINUATION_REQUEST_TYPE_WATCH_NEXT"}}}}],"trackingParams":"CJYCELsvGAIiEwjV9Z_B59-LAxVc4EIFHXysCtc=","sectionIdentifier":"comment-item-section","targetId":"comments-section"}}],"trackingParams":"CJUCELovIhMI1fWfweffiwMVXOBCBR18rArX"}},"secondaryResults":{"secondaryResults":{"results":[{"compactVideoRenderer":{"videoId":"SSygU-bJmJw","thumbnail":{"thumbnails":[{"url":"https://i.ytimg.com/vi/SSygU-bJmJw/hqdefault.jpg?sqp=-oaymwE1CKgBEF5IVfKriqkDKAgBFQAAiEIYAXABwAEG8AEB-AHUBoAC4AOKAgwIABABGGUgVChUMA8= 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