In a vernier callipers, 1 cm on the main scale is divided into 10 equal parts and 10 divisions of the vernier scale coincide with 9 divisions of the main scale. When the jaws touch each other, the zer

Question

In a vernier callipers, 1 cm on the main scale is divided into 10 equal parts and 10 divisions of the vernier scale coincide with 9 divisions of the main scale. When the jaws touch each other, the zero of the vernier is to the right of the zero of the main scale and the third vernier division coincides with a main scale division. With a cylinder held tightly between the jaws, the zero of the vernier lies between 2.3 cm and 2.4 cm and the sixth vernier division coincides with a main scale division. Find the diameter of the cylinder.

Answer:

2.33

Solution:

LC $= 0.01$ cm

Positive zero error $= 3 \times 0.01 = 0.03$ cm

Observed reading $= 2.3 + 6 \times 0.01 = 2.36$ cm

Actual diameter $= 2.36 - 0.03 = 2.33$ cm

TestHub · Accepted Answer

LC = 0.01 cm Positive zero error = 3 × 0.01 = 0.03 cm Observed reading = 2.3 + 6 × 0.01 = 2.36 cm Actual diameter = 2.36 − 0.03 = 2.33 cm

Physics - Error Question with Solution | TestHub

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