Errors in measurementHard
Question
A spectrometer gives the following readingwhen used to measure the angle of a prism.Main scale reading : 58.5 degreeVernier scale reading : 09 divisionsGiven that 1 division on main scalecorresponds to 0.5 degree. Total divisions on the vernier scale is 30 and match with 29 divisions of the main scale. The angle of the prism from the above data :
Options
A.59 degree
B.58.59 degree
C.58.77 degree
D.58.65 degree
Solution
Least count = MSD – VSD
where MSD = 0.5o & 30VSD = 29MSD
so least count = 0.5o
Reading = 58.5o + (09)
where MSD = 0.5o & 30VSD = 29MSD
so least count = 0.5o
Reading = 58.5o + (09)
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