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A micrometer has 150 equal divisions on the circular scale,and on one full rotation ofcircular scale main scale advances by0.02 cm on the main scale. The leastcount of themicrometer (in cm) is |
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Answer» Explanation:Given : 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 : The least count of the micrometer (in cm) is SOLUTION: 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. 1 main Scale = 150 Vernier scale Divisions 1 main Scale = 0.02 cm 150 Divisions = 0.02 cm => 1 Vernier scale Divisions = 0.02/150 cm => 1 Vernier scale Divisions = 2/15000 cm => 1 Vernier scale Divisions = 2/(1.5 x 10⁴) cm => 1 Vernier scale Divisions = 1.33 x 10⁻⁴ cm |
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