Question

A Vernier scale has 10 divisions and on its main scale lcm is divided h pa
The number of divisions on the left hand of zero of Vernier scale is 56 and 8th
Vernier scale division coincides with the main scale. If the instrument has 0.09 cm
of negative zero error, calculate the corrected length.


step by step ​

Answer 1

5.59cm

Explanation:

least count=0.1/10=0.01cm

Main scale reading=5.6cm

Vernier scale reading=8×0.01cm=0.08cm

Observed reading=5.6+0.08=5.68cm

True reading=5.68-0.09cm=5.59cm

Answer 2

Answer: Least count of Vernier calipers = S/n =0.1cm/10 = 0.01cm

Measured length  = MSR  + VSD*LC

                               = 5.6 cm  +0.08 cm  * 0.01cm

                               = 5.6 cm +0.08cm =  5.68 cm

Corrected Length  =  Measured length  - Correction

                                = Measured length - Correction

                                = 5.68 cm - (- 0.09 cm)  = 5.77 cm

Explanation: