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Q: Calculate the number of division of the main scale that is equal to the 8 divisions of the extended vernier.
  • A. 7
  • B. 9
  • C. 15
  • D. 16
Correct Answer: Option C - Extended vernier is that vernier in which (2n–1) division of main scale is equal to n divisions of vernier scale. 8 no. of extended vernier = (2x8–1) = 15 division of main scale.
C. Extended vernier is that vernier in which (2n–1) division of main scale is equal to n divisions of vernier scale. 8 no. of extended vernier = (2x8–1) = 15 division of main scale.

Explanations:

Extended vernier is that vernier in which (2n–1) division of main scale is equal to n divisions of vernier scale. 8 no. of extended vernier = (2x8–1) = 15 division of main scale.