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EXAM PREPARATION

Objective Question & Answer

QUESTION

Objective Question

Q.1
The joining of intersection of cross hairs to the optical center of objective in a theodolite is called as
थियोडोलाइट में क्रॉस-हेयर के प्रतिच्छेदन बिंदु को ऑब्जेक्टिव के ऑप्टिकल सेंटर से जोड़ने वाली रेखा को क्या कहा जाता है?
A

Parallax

पैरालैक्स

B

Line of collimation

लाइन ऑफ कोलिमेशन

C

Azimuth

एज़िमुथ

D

Line of sight

लाइन ऑफ साइट

Answer ( Option B)

Line of collimation

लाइन ऑफ कोलिमेशन

Solution

Line of Collimation- It is an imaginary line joining the intersection of crosshair, to the optical centre of the objective and

it,s continuation.

Axis of telescope- It is the line joining the optical centre of the object glass to the centre of the eyepiece.

Axis of level tube- It is a line tangential to the longitudinal curve of the level tube at its centre.

कोलिमेशन रेखा (Line of Collimation) - यह एक काल्पनिक रेखा है जो क्रॉसहेयर के प्रतिच्छेदन बिंदु को ऑब्जेक्टिव (objective) के

ऑप्टिकल केंद्र से जोड़ती है और आगे तक जाती है।

टेलीस्कोप की अक्ष (Axis of telescope) - यह वह रेखा है जो ऑब्जेक्ट ग्लास के ऑप्टिकल केंद्र को आईपीस (eyepiece) के केंद्र से जोड़ती

है।

लेवल ट्यूब की अक्ष (Axis of level tube) - यह एक ऐसी रेखा है जो लेवल ट्यूब के केंद्र पर उसके अनुदैर्ध्य वक्र (longitudinal curve) को स्पर्श करती है।
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