Civil GATE 2018 Question No 46 - Photogrammetry

Question No. 46 Civil | GATE 2018

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 aerial photograph was taken, is

(A) 800 m
(B) 1500 m
(C) 2150 m
(D) 3150 m

Answer : (C) 2150 m

GATE 2018 Civil Photogrammetry - Scale, Flying Height

Solution of Question No 46 of GATE 2018 Civil Paper

Actual area = 100 x 100 = 10⁴ m²

Area on the map = 1 cm² = 10^-4 m²

Elevation of the surface = 650 m

Focal length of camera, f = 150 mm

Scale of the photograph,

$\begin{array}{l}\mathrm S=\sqrt{\frac{10^{-4}}{10^4}}=\frac1{10^4}\\\mathrm S=\frac{\mathrm f}{\mathrm H-\mathrm h}\\\frac1{10^4}=\frac{150\times10^3}{\mathrm H-650}\\\mathrm H=1500+650=2150\;\mathrm m\;\end{array}$

Comments

KENrEq http://pills2sale.com/ levitra nizagara

Posted on 18/10/2020 17:43:12 by dobsonz

uGgAza http://pills2sale.com/ levitra nizagara

Posted on 18/10/2020 18:47:04 by dobsonz

oRuSR4 http://pills2sale.com/ viagra cialis buy

Posted on 01/11/2020 19:42:06 by johnanx

xnANmV https://www.quora.com/What-the-top-SEO-keywords-for-essay-you-know/answer/Alan-Smith-1772 write my essay

Posted on 03/12/2020 23:23:11 by dobson

FsQrdz https://www.quora.com/What-the-top-SEO-keywords-for-essay-you-know/answer/Alan-Smith-1772 write my essay

Posted on 04/12/2020 00:38:30 by dobson

kC47TC http://xnxx.in.net/ xnxx videos

Posted on 12/12/2020 20:44:35 by johnan

DrIl2h http://xnxx.in.net/ xnxx videos

Posted on 13/12/2020 00:48:08 by johnan

HnZshI https://writemyessayforme.web.fc2.com/

Posted on 13/12/2020 04:31:59 by dobson

Ng494E https://writemyessayforme.web.fc2.com/

Posted on 13/12/2020 05:39:01 by dobson

4HmVBp https://writemyessayforme.web.fc2.com/#writemyessay

Posted on 15/12/2020 05:31:23 by dobson

nYj6F5 https://writemyessayforme.web.fc2.com/#writemyessay

Posted on 15/12/2020 06:39:02 by dobson

I5iGeq https://writemyessayforme.web.fc2.com/octavio-paz-essay-day-of-the-dead.html

Posted on 09/01/2021 08:54:35 by dobson

b6fzj9 https://writemyessayforme.web.fc2.com/octavio-paz-essay-day-of-the-dead.html

Posted on 09/01/2021 09:53:02 by dobson

F5yOMY http://waldorfdollshop.us/ waldorf doll

Posted on 09/01/2021 13:08:21 by johnanz

bbcP2U http://waldorfdollshop.us/ waldorf doll

Posted on 09/01/2021 14:07:46 by johnanz

sO8NCC http://nexus.cct.lsu.edu:8000/nexus_uis/930

Posted on 17/01/2021 10:12:33 by johnanz

iK34Vw https://beeg.x.fc2.com/

Posted on 26/01/2021 13:44:09 by markus

YEKgAT https://beeg.x.fc2.com/

Posted on 26/01/2021 14:51:50 by markus

E7iTSs https://buyzudena.web.fc2.com/

Posted on 27/01/2021 12:30:17 by markus

dq3U00 https://buyzudena.web.fc2.com/

Posted on 27/01/2021 14:38:16 by markus

GATE Papers >> Civil >> 2018 >> Question No 46

Answer : (C) 2150 m

Questions of Photogrammetry - Scale, Flying Height

About

Follow Us On

Contact Us

Search in Website