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Units and Measurements question

2024 · 8 Apr · Shift 2 · Q72
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Units and Measurements question

2024 · 8 Apr · Shift 2 · Q72

JEE MainPhysicsUnits and MeasurementsMCQ+4 / −1
Least count of a vernier caliper is 120 N cm\frac{1}{20 \mathrm{~N}} \mathrm{~cm}20 N1​ cm. The value of one division on the main scale is 1 mm1 \mathrm{~mm}1 mm. Then the number of divisions of main scale that coincide with N\mathrm{N}N divisions of vernier scale is :
  1. A
    (2 N−12 N)\left(\frac{2 \mathrm{~N}-1}{2 \mathrm{~N}}\right)(2 N2 N−1​)
  2. B
    (2 N−120 N)\left(\frac{2 \mathrm{~N}-1}{20 \mathrm{~N}}\right)(20 N2 N−1​)
  3. C
    (2 N−1)(2 \mathrm{~N}-1)(2 N−1)
  4. D
    (2 N−12)\left(\frac{2 \mathrm{~N}-1}{2}\right)(22 N−1​)
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