Download Aptitude Crack
img not found img not found

UPSC Civil Service Exam Questions

Q1: A 3000 m long line lying at an elevation of 450 m measures 10 cm on a vertical photograph.
The focal length of the camera is 21 cm. The scale of the photograph for the area having an elevation of 1000 m will be

A 1 : 27381

B 1 : 25008

C 1 : 20606

D 1 : 30421

ANS:A - 1 : 27381

Scale = 10/(3000 *100) = 1/30000.
Now,
1/30000 = 0.21/(H - 450).
You get flying height, H = 6750m.

For 2nd case.
Scale = f/(H - h).
Scale = 0.21/(6750 - 1000) = 1 in 27381.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.