In an experiment with vernier callipers of least count 0.1 mm, when two jaws are joined together the zero of vernier scale lies right to the zero of the main scale and 6 th division of vernier scale coincides with the main scale division. While measuring the diameter of a spherical bob, the zero of vernier scale lies in between 3. 2 cm and 3. 3 cm marks and 4 th division of vernier scale coincides with the main scale division. The diameter of bob is measured as
Text Solution
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The least count is LC = 0.1 mm
Zero error (ZE) = 6xLC = 6x0.1 mm = 0.6 mm
The total reading is
TR = MSR +(VSR x LC)-ZE
TR = 32 mm + (0.1 x 4) mm - 0. 6 mm
TR = 31. 8 mm = 3.18 cm
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