{"id":159804,"date":"2023-09-16T14:33:43","date_gmt":"2023-09-16T09:03:43","guid":{"rendered":"https:\/\/www.gkseries.com\/blog\/?p=159804"},"modified":"2023-09-16T14:33:45","modified_gmt":"2023-09-16T09:03:45","slug":"a-square-area-on-the-surface-of-the-earth-with-side-100-m-and-uniform-height-appears-as-1-cm2-on-a-vertical-aerial-photograph","status":"publish","type":"post","link":"https:\/\/www.gkseries.com\/blog\/a-square-area-on-the-surface-of-the-earth-with-side-100-m-and-uniform-height-appears-as-1-cm2-on-a-vertical-aerial-photograph\/","title":{"rendered":"A square area (on the surface of the earth) with side 100 m and uniform height, appears as 1 cm2 on a vertical aerial photograph"},"content":{"rendered":"\n<p>Q. A square area (on the surface of the earth) with side 100 m and uniform height, appears as 1 cm<sup>2<\/sup> on a vertical aerial photograph. The topographic map shows that a contour of 650 m passes through the area. If focal length of the camera lens is 150 mm, the height from which the aerial photograph was taken, is<\/p>\n\n\n\n<p>(A) 800 m\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (B) 1500 m\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (C) 2150 m\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (D) 3150 m<\/p>\n\n\n\n<p>Ans: 2150 m\u00a0\u00a0<\/p>\n\n\n\n<p>Sol:<\/p>\n\n\n\n<p>Actual area =\u00a0100\u00d7100=10<sup>4<\/sup>m<sup>2<\/sup><\/p>\n\n\n\n<p>Area on the map = 1 cm2\u00a0=\u00a010<sup>\u22124<\/sup>\u00a0m<sup>2<\/sup><\/p>\n\n\n\n<p>Elevation of the surface = 650 m<\/p>\n\n\n\n<p>The focal length of the camera, f = 150 mm<\/p>\n\n\n\n<p>Scale of the photograph,<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"155\" height=\"180\" src=\"https:\/\/www.gkseries.com\/blog\/wp-content\/uploads\/2023\/09\/Screenshot-916.png\" alt=\"\" class=\"wp-image-159805\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Q. A square area (on the surface of the earth) with side 100 m and uniform height, appears as 1 cm2 on a vertical aerial photograph. The topographic map shows that a contour of 650 m passes through the area. If focal length of the camera lens is 150 mm, the height from which the [&hellip;]<\/p>\n","protected":false},"author":419,"featured_media":159806,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5141],"tags":[5140],"offerexpiration":[],"class_list":["post-159804","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gate","tag-gate-questions"],"_links":{"self":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/159804","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/users\/419"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/comments?post=159804"}],"version-history":[{"count":1,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/159804\/revisions"}],"predecessor-version":[{"id":159807,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/159804\/revisions\/159807"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/media\/159806"}],"wp:attachment":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/media?parent=159804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/categories?post=159804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/tags?post=159804"},{"taxonomy":"offerexpiration","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/offerexpiration?post=159804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}