Question

The length of a cylinder is measured with the help of a vernier callipers whose nine divisions of the main
scale are equal to ten divisions of the vernier scale. Smallest division on the main scale is 0.5 mm It
is observed that zero of vernier scale has just crossed the 78th division of the main scale, if fourth
division of the vernier coincides with any main scale division. The length of the cylinder is -
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Answer 1

0answer is the length of cylinder