The document describes an experiment to measure the diameter and volume of a solid sphere using a vernier caliper. It provides the formulas for calculating diameter from the main and vernier scale readings taking into account the least count, and the formula for calculating volume from the diameter. Measurements are then taken and the diameter and volume are calculated.

1. AFS2012/Dept of Sci/Phy Grd 8
Vernier Calipers
Aim; To find the diameter of the given sphere and hence calculate its volume.
Observations:
Value of one main scale division(MSD ) = cm
Total number of vernier divisions n =
Length of vernier scale,l = cm
Value of one vernier division (VSD) = l/n = cm
Least count =1 MSD – 1 VSD = cm = x10-2
m

2. AFS2012/Dept of Sci/Phy Grd 8
Formulae:
Volume of the sphere= πr3
Diameter of the sphere=[MSR+(V.S.R x L.C)]
Observations
Least count= 0.01cm = 0.01 x10-2
m
Zero correction= divisions
Dimension
measured
S.No Main scale
reading(MSR)
x10-2
m
Vernier scale
division(VSD)
Vernier scale
reading=(VSR)±ZC
Correct
reading=MSR+(VSRxLC)
x10-2
m
Diameter of
solid sphere
Mean= x10-2
m
Diameter of the solid sphere d= x10-2
m
Radius of the solid sphere r=d/2= x10-2
m
Volume of the solid sphere= m3