Question No 4 The main scale of a Vernier calliper has 20 divisions in 1 cm If 18 - Physics - Units And Measurements

Question

Question No 4
The main scale of a Vernier calliper has 20 divisions in 1 cm If 18
main scale divisions coincide with 20 Vernier scale divisions, then
which of the following statements is correct?

A The pitch of the Vernier calliper is 0 5 cm
B The pitch of the Vernier calliper is 0 025 cm
C The least count of the Vernier calliper is 0 025 cm
D The least count of the Vernier calliper is 0 005 cm

Vijay Shankar Yadav · Accepted Answer

Dear Student,
Pitch=Unit of main scale no of divisions in one unit =120=
05cmLeast count of vernier scale =VSD-MSDVSD×main scale least count=20-1820×
05=0 005cmHence option D is correct
Regards