GATE | GATE-CS-2017 (Set 1) | Question 9



A contour line joins locations having the same height above the mean sea level. The following is a contour plot of a geographical region. Contour lines are shown at 25 m intervals in this plot.

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If in a flood, the water level rises to 525 m, which of the villages P, Q, R, S, T get submerged?
(A) P,Q
(B) P,Q,T
(C) R,S,T
(D) Q,R,S


Answer: (C)

Explanation: Given data – height of all villages

  • P = 575
  • Q = 525
  • R = 475
  • S = 425
  • T = 500

Villages  below the flood level – 525m are

  1. R <500m
  2. 425m<= S<=450m
  3. 500m <=T<= 525m

Therefore option C is correct.

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