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What is the importance of a topographic sheet ?


 It gives detailed information of the concerned area.
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What are conventional signs ? What are their uses?

Write a short note on interpolation of contours.

Draw contours to show the following relief features:

1. Convex slope
2. Gentle slope
3. Conical hill
4. Plateau
5. V-shaped valle
6. Waterfall.


Name the headquarter of Survey of India.

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