Civil Engineering - Surveying - Discussion

20. 

The 10 mm markings on a levelling staff placed at 20 m are separated by

[A]. radian
[B]. radian
[C]. radian
[D]. radian.

Answer: Option C

Explanation:

No answer description available for this question.

Schiff Hardin said: (Oct 24, 2016)  
Anyone explain it.

Judicious said: (Oct 26, 2016)  
How? Please explain.

Rozer said: (Dec 16, 2016)  
1m = .5mm using a scale.

Vaibhav said: (Oct 24, 2017)  
For 10 mm (i.e. 0.01 m) vertical, horizontal is 20 m.

Therefore slope = vertical/horizontal = 0.01/ 20 = 1/2000.

Chandu said: (Aug 29, 2019)  
10/20000 = 1/2000.

Akshay said: (Oct 6, 2019)  
(10mm/20m) = (10mm/20000mm) = (1/2000).

Ajamal Khan said: (Apr 2, 2020)  
Angle = chord/radius.
So 10mm/20m.
= 10mm/20000mm.
= 1/2000 is answer.

Balu said: (Dec 3, 2021)  
10mm convert to meters 0.001.
20m.
So, 0.001/20 =1/2000.

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