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प्रश्न
Describe the method by which the distance on a curved line is measured.
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उत्तर
The distance on a curved line is measured using a piece of twine or a divider.
In the divider method, a divider whose pointed ends are 1 or 2 cm apart is used. Beginning at one end of the feature to be measured, the divider is turned continuously till the other end is reached. The number of turns are counted and then using the scale of the map, the actual distance on the ground calculated.
In the twine method, a twine is placed along the feature to be measured from one end to another. The length of the twine is then measured in cm or inches using a ruler or linear scale and then converted into km or miles using the scale of the given map.
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संबंधित प्रश्न
Write True or False. Correct the false statement.
The distance between the two tracks in a broad gauge is 1 m.
Fill in the blanks. One has been done for you.
| Distance on the map | Distance on the ground | Scale |
| 5 cm | 25 km | 1 cm = 5 km |
| 10 cm | 100 km | ______ |
| 2 cm | ______ | 1 cm = 30 km |
| ______ | 49 m | 1 cm = 7 m |
| 6 cm | 60,000 km | ______ |
Choose the correct answer:
The distance between two points along a straight line can be measured by this method
How is a distance on a map measured by a piece of twine?
Why are ‘True North’ and ‘Grid North’ different?
With regard to scale, answer the following question:
Convert the following statement into R.F.
25 cm on the map = 5 km on ground.
With regard to scale, answer the following question:
Convert the following statement into R.F.
5 cm = 500 metres.
With regard to scale, answer the following question:
Convert the following statement into R.F.
15 cm = 6 km
Convert the following representative fraction into a statement:
1 : 63360 (to show miles).
Convert the following representative fraction into a statement:
1 : 1000000 (to show kilometres).
