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 = x10-2m

AFS2012/Dept of Sci/Phy Grd 8

Formulae:

Volume of the sphere= 43

πr3

Diameter of the sphere=[MSR+(V.S.R x L.C)]

Observations

Least count= 0.01cm = 0.01 x10-2m

Zero correction= divisions

Dimension measured

S.No Main scale reading(MSR)x10-2m

Vernier scale division(VSD)

Vernier scale reading=(VSR)±ZC

Correct reading=MSR+(VSRxLC)x10-2m

Diameter of solid sphere

Mean= x10-2m

Diameter of the solid sphere d= x10-2m

Radius of the solid sphere r=d/2= x10-2m

Volume of the solid sphere= m3

AFS2012/Dept of Sci/Phy Grd 8