Physics · Units and Measurements
The diameter of a spherical bob is measured using a vernier caliper. 9 divisions of the main scale are equal to 10 divisions of the vernier scale. One main scale division is 1 mm. The main scale reading is 10 mm and the 8th division of the vernier scale coincides exactly with one of the main scale divisions. If the given vernier caliper has a positive zero error of 0.04 cm, then the radius of the bob is ________ × 10-2 cm.
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