A beaker is measured with a vernier depth gauge for which 50 VSD = 49 MSD and 1 MSD = 1 mm. The main-scale reading is 79 mm and the 28th VSD coincides when the probe touches the bottom. The instrument has negative zero error -0.12 mm. The corrected depth is:
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Question

A beaker is measured with a vernier depth gauge for which 50 VSD = 49 MSD and 1 MSD = 1 mm. The main-scale reading is 79 mm and the 28th VSD coincides when the probe touches the bottom. The instrument has negative zero error -0.12 mm. The corrected depth is:

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G1 Physics · Accepted Answer

LC = 1/50 mm = 0.02 mm. Observed depth = 79 + 28(0.02) = 79.56 mm. Zero correction = +0.12 mm. Corrected depth = 79.68 mm.

A beaker is measured with a vernier depth gauge for which 50 VSD = 49 MSD and 1 MSD = 1 mm. The main-scale reading is 79 mm and the 28th VSD coincides when the probe touches the bottom. The instrument has negative zero error −0.12 mm. The corrected depth is: