The suitable contour interval for a map with scale 1 : 10000 is
A. 2 m
B. 5 m
C. 10 m
D. 20 m
Answer: Option A
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we know that contour interval=20/no of cm per km
1:10000
1cm= 0.1km
1km=10cm
therefore contour interval=20/10=2
scale : 1:10000 i.e ,
1cm in map = 10000cm in plan
now also 1 cm in map =10000cm or 0.1km inplan
also 10cm in map = 1km
i.e no of cm per km = 10
now we know from formulae contour interval (C.I)m=( 20/ (no of cm per km ))m
=20/10
=2m
Pls explain
How the answer 2m
B