Question

what is the source of error using varnire caliper and metric ruler in measurement

Answer 1

Answer:

do and understand

Explanation:

The LC of vernier calipers is given as L.C.=1M.S.D.−1V.S.D.

Where MSD and VSD are main and vernier scale division:

MSD=0.1 cm

Given 10 VSD coincides with 9 MSD

10VSD=9MSD⇒VSD=0.9MSD=0.09cm

Least count is given as 0.1 cm−0.09 cm =0.01 cm

The reading of scale is given as Main Scale reading + L.C.×VSD−error

Reading 1 =0.5 cm+0.01×8−(−0.03) cm =0.61 cm

Reading 2 =0.5 cm+0.01×4−(−0.03) cm =0.57 cm

Reading 3 =0.5 cm+0.01×6−(−0.03) cm =0.59 cm

Taking average of three readings diameter =

3

0.61+0.57+0.59

=0.59 cm