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A site has 6 contour lines and the length of the line joining the midpoints of the highest contour and lowest contour is 300m. If the slope of the line is 1 in 10, then the contour interval (in m) is
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- 5
- 6
- 50
- 60
Correct Option: B
Run = 300m
Slope = 1/10
So, rise or drop = 30 m
Number of Contour lines = 6
Number of contour intervals = 5
Therefore contour interval = 30/5 = 6 m
