Question

the vernier is used to measure the length of an object the least count of vernier caliper is 0.2 cm and the scale reads the length to be 5.6 3rd division of vernier scale is coinciding main scale division calculate the length of the object

Answer 1

Least count of a vernier calipers is L.C=1M.S.D−1V.S.D  where M.S.D= main scale division and V.S.D= vernier scale division.

Here, 25V.S.D=23M.S.D or 1V.S.D=(23/25)M.S.D

Thus, L.C=1M.S.D−(23/25)M.S.D=(2/25)M.S.D=(2/25)(1mm)=0.08mm

Answer 2

Hey there!

Given,

L.C = 0.01 cm

Zero error = + 0.02 cm

Main scale reading = 4.8 cm

number of vernier division coinciding with the main scale division is 6.

Length of rod = observed reading - zero error

=[ main scale reading + coinciding vernier division] - zero error

= 4.8 + 0.06 cm - (+0.02)

= 4.86 - 0.02 = 4.84 cm

Hope It Helps You!