Home Physics Units, Dimensions and Measurement General In an experiment with vernier callipers of l…
Physics Units, Dimensions and Measurement General MCQ (Single Correct)

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

A
3.22 cm
B
3.18 cm
C
3. 26 cm
D
3. 25 cm

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Text Solution

Verified by Experts
The correct answer is:
B

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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