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
a) 4 × 10⁻⁵
b) 6.21 × 10⁻³
c) 1.33 × 10⁻⁴
d) 1.21 × 10⁻²
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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 . ... The least count of the ... O 6.21 x 10-3. O 1.33 x 10-4
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