PhysicsHard156×since 2002Q8365Least 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 :A(2 N−12 N)\left(\frac{2 \mathrm{~N}-1}{2 \mathrm{~N}}\right)(2 N2 N−1)B(2 N−120 N)\left(\frac{2 \mathrm{~N}-1}{20 \mathrm{~N}}\right)(20 N2 N−1)C(2 N−1)(2 \mathrm{~N}-1)(2 N−1)D(2 N−12)\left(\frac{2 \mathrm{~N}-1}{2}\right)(22 N−1)Check answerSkip