Question

A micrometer has 150 equal divisions on the circular
scale, and on one full rotation of circular scale main
scale advances by 0.02 cm on the main scale. The least
count of the micrometer (in cm) is

Answer 1

Answer:

A micrometer has 150 equal divisions on the circular

scale, and on one full rotation of circular scale main

scale advances by 0.02 cm on the main scale. The least

count of the micrometer (in cm) is

Answer 2

Given info : A micrometer has 150 equal divisions on the circular scale, and on one full rotation of circular scale main scale advances by 0.02 cm on the main scale.

To find : least count of the micrometer.

Solution : least count is the ratio of pitch to the number of divisions of circular scale.

i.e., least count = pitch/no of divisions of circular scale.

= 0.02cm/150 = 0.0001333 cm

= 1.33 × 10¯⁴ cm

therefore the least count of micrometer is 1.33 × 10¯⁴ cm

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