Civil Engineering - Surveying - Discussion


The real image of an object formed by the objective, must lie

[A]. in the plane of cross hairs
[B]. at the centre of the telescope
[C]. at the optical centre of the eye-piece
[D]. anywhere inside the telescope.

Answer: Option A


No answer description available for this question.

Neeraj Paul said: (Aug 12, 2015)  
Real image formed on cross eye or front of the eyepiece.

Mantu said: (Aug 20, 2015)  
Eye piece used to clear vision of cross hair.

Kedir Wedajo said: (Nov 12, 2015)  
The real image is the plane of cross hairs because upper middle and lower number we have to get in this by cross hairs.

Jay said: (Jan 5, 2018)  
This is done to remove parallax.

Kailah said: (Jan 13, 2018)  
It is infront of the eye piece.

Aditya Kumar said: (Jul 18, 2018)  
Option A is correct. I agree.

Vasanth S D said: (Aug 2, 2018)  
If the image formed by the objective is not in the plane of crosshairs then the error is called as PARALLAX ERROR.

Atanu Mandal said: (Sep 12, 2018)  
Option A is correct.

Bheem said: (Sep 3, 2019)  
Option A is correct.

Vipul Parmar said: (Nov 29, 2019)  
THE RIGHT ANSWER IS option A, FOR THE REFERENCE (surveying and leveling book by R Agor).

Priya said: (Sep 21, 2020)  
Option A is correct. Because real image must be lie in cross hair.

Kazi said: (Feb 12, 2021)  
The real image of an object formed by the objective must lie in the plane of crosshairs.

King Khan said: (Jun 14, 2022)  
Option D is the correct answer.

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