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Q: Collimation method is otherwise called :
  • A. Rise and fall method/चढ़ाव-उतार विधि
  • B. Height of instrument method उपकरण ऊँचाई विधि
  • C. Profile levelling/अनुदैर्ध्य तलेक्षण
  • D. Differential levelling/अन्तरीय तलेक्षण
Correct Answer: Option B -
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Explanations:

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