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  4. The Vernier scale of a travelling microscope has 50 divisions which coincides with 49 main scale divisions. If each main scale division is 0.5 mm, then the lease count of the microscope is

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Q. The Vernier scale of a travelling microscope has $50$ divisions which coincides with $49$ main scale divisions. If each main scale division is $0.5\, mm$, then the lease count of the microscope is

KCETKCET 2022Physical World, Units and Measurements

Solution:

$L . C =1 MSD -1 VSD$
or L.C $=\frac{1 MSD }{\text { No.of.vernier scale division }}=\frac{0.05\, mm }{50}$
L.C $=0.01 \,mm$