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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.

The path from $P$ to $Q$ is best described by

1. Up-Down-Up-Down
2. Down-Up-Down-Up
3. Down-Up-Down
4. Up-Down-Up
Migrated from GO Electronics 3 years ago by Arjun

This question came in CS too

question is different please see clearly

The line starts from $P$ which is inside $575$ contour line.

Then line crosses the contour lines $575\rightarrow550\rightarrow525\rightarrow500$. Down

Then it crosses the contour lines of $500\rightarrow525\rightarrow550\rightarrow575$ Up

Then it crosses the contour lines $575\rightarrow550$ and then stops at $Q$ which is inside the contour line $525$. Down

$\therefore$ Option C Down up Down is the correct answer.

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