Physics
Answer
On bringing, the movable jaw in contact with the fixed jaw, the zero mark of the vernier scale should coincide with the zero mark of the main scale. In this position, the tenth division of the vernier callipers coincides with the ninth division of the main scale.
If it is so, the vernier is said to be free from zero error.
Related Questions
How can you decrease the least count of a vernier callipers?
Define the term 'Vernier constant'.
Name the part of the vernier callipers which is used to measure the following —
External diameter of a tube,
Internal diameter of a mug,
Depth of a small bottle,
Thickness of a pencil.
State the difference between positive and negative zero error of a vernier callipers.