{"id":1739,"date":"2022-11-21T16:00:05","date_gmt":"2022-11-21T10:30:05","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=1739"},"modified":"2022-11-22T16:51:00","modified_gmt":"2022-11-22T11:21:00","slug":"image-formation-by-concave-convex-lenses","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/image-formation-by-concave-convex-lenses\/","title":{"rendered":"Image Formation by Concave and Convex Lenses"},"content":{"rendered":"
Case 1: Object at Infinity<\/strong> A big size object with its foot on the principal axis:<\/strong> People also ask\u00a0<\/strong><\/p>\n Case 2: Object at distance more than twice the Focal Length<\/strong> Case 3: Object at distance twice the Focal Lengths<\/strong> Case 4: Object at distance more than Focal Length and less than twice is Focal Length<\/strong> Case 5: Object at Focus<\/strong> Case 6: Object between Focus and Optical Centre<\/strong> Case 1: Object at infinity<\/strong> A big size object with its foot on the principal axis:<\/strong> Case 2: Object at a Finite Distance<\/strong> <\/p>\n","protected":false},"excerpt":{"rendered":" Image Formation By Convex Lens\u00a0in Different Cases Case 1: Object at Infinity A point object lying on the principal axis: Rays come parallel to the principal axis and after refraction from the lens, actually meet at the second principal focus F2. Fig. Convex lens point object at infinity, image at focus. The image is formed […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[404],"tags":[605,606,607,579],"yoast_head":"\n
\nA point object lying on the principal axis:<\/strong>
\nRays come parallel to the principal axis and after refraction from the lens, actually meet at the second principal focus F2<\/sub>.
\n
\nFig.<\/strong> Convex lens point object at infinity, image at focus.
\nThe image is formed at focus F2<\/sub>. It is real and point sized.<\/p>\n
\nParallel rays come inclined to the principal axis. Image of foot is formed at the focus.
\nImage is formed at the second principal focus F2<\/sub>. It is real inverted and diminished (smaller in size than the object). (Fig.)
\nParallel rays from infinity
\n
\nFig.<\/strong> Convex lens : big size object at infinity, image at focus<\/p>\n\n
\nReal object AB has its image A’B’ formed between distance f and 2f.
\nThe image is real inverted and diminished (smaller in size than the object)
\n
\nFig.<\/strong> Convex lens : object beyond 2f, image between f and 2f.<\/p>\n
\nReal object AB has its image A’B’ formed at distance 2f.
\n
\nFig.<\/strong> Convex lens : object at distance 2f, image at distance 2f.
\nThe image is real, inverted and has same size as the object.<\/p>\n
\nReal object AB has its image A’B’ formed beyond distance 2f.
\n
\nFig.<\/strong> Convex lens : object at distance between f and 2f, image beyond 2f.
\nThe image is real inverted and enlarged (bigger in size than the object).<\/p>\n
\nReal object AB has its image formed at infinity.
\n
\nFig.<\/strong> Convex lens : object at focus, image at infinity.
\nThe image is imaginary inverted (refracted rays to downward) and must have very large size.<\/p>\n
\nReal object AB has its image A’B’ formed in front of the lens.
\n<\/p>\nImage Formation By <\/strong>Concave Lens in Different Cases<\/strong><\/h2>\n
\nA point object lying on the principal axis:<\/strong>
\nRays come parallel to the principal axis and after refraction from the lens, appears to come from the second principal focus F2<\/sub>.
\n
\nFig.<\/strong> Concave lens point object at infinity, image at focus.
\nThe image is formed at focus F2. It is virtual and point sized (fig.)<\/p>\n
\nParallel rays come inclined to the principal axis. Image of foot is formed at focus.
\nThe image is formed at the second principal focus F2<\/sub>.
\nIt is virtual\u2013erect and diminished (fig.)
\n
\nFig.<\/strong> Concave lens : big size object at infinity image at focus.<\/p>\n
\nReal object AB has its image A’B’ formed between second principal focus F2<\/sub>\u00a0optical centre C.
\nThe image is virtual\u2013erect and diminished.<\/p>\n