Allied & ICAR Exam Bank • ALLIED_2413 MCQ • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Ratios & Percentages

Question Statement:

An aerial photograph taken from an altitude of 3,000 m with a camera of focal length 15 cm covers a ground square parcel of 4 km side. The length of the side of this parcel on the photograph is:

Options:

  • (A) 20 cm
  • (B) 15 cm
  • (C) 25 cm
  • (D) 18 cm

Answer Key:

A

Step-by-Step Solution & Explanation

Scale $= f / H = 0.15 / 3000 = 1 / 20,000$. Photo length $= 4,000 / 20,000 = 0.20$ m $= 20$ cm.
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