Question

7. In a vernier callipers, there are 10 divisions on the
vernier scale and 1 cm on the main scale is divided
in 10 parts. While measuring a length, the zero of
the vernier lies just ahead of 1.8 cm mark and 4th
division of vernier coincides with a main scale
division
(a) Find the length.
(b) If zero error of vernier callipers is - 0.02 cm,
what is the correct length ?
pls show the steps too
immediate help​

Answer 1

Explanation:

In a vernier calipers, there are 10 divisions on the vernier scale and 1 cm on the main scale is divided in 10 parts. While measuring a length, the zero of the vernier lies just ahead of 18 cm mark and 4th division of vernier coincides with a main scale division. The length is 184×10−xcm