How to find the diameter of a spherical body using vernier caliper
Answers
Answer:
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Here is ur answer.
Procedure
Keep the jaws of the vernier calliper closed. Make sure that the zero of the main scale perfectly coincides with the zero of the vernier scale. If it doesn’t coincide account for the zero error for all observations.
Using a magnifying glass, look for the division of the main scale that coincides with the division of the vernier scale. Note down the number of division that coincides with each other. To avoid parallax error, position your eye directly over the division mark.
Release the movable jaw by gently loosening the screw. Slide it enough to hold the sphere or the cylindrical body between the jaws AB without any undue pressure. Align the perfectly perpendicular to the diameter of the body. Gently tighten the screw in order to clamp the instrument in this position to the body.
Note down the position of the zero of vernier’s scale against the zero of the main scale. Normally, it will not perfectly coincide with any of the divisions on the main scale. Record the main scale division to the left of the zero marks of the vernier scale.
Look for the exact coincidence of the vernier scale division with that of the main scale division in the vernier window from the left end to the right. Note down the number N.
Multiply the obtained N by the least count of the instrument and add the product to the main scale reading noted in step 4. Make sure to convert the product into proper units for valid addition.
Repeat steps 3-6 to get the positions of the body at different positions on its curved surface. Make sure to take three sets of reading in each case.
Record the observations in a tabular column with proper reading. If needed, apply zero correction.
Find the arithmetic mean of the corrected readings of the diameter of the body.
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