There are 20 divisions in 4 cm of the main scale. The vernier scale has 10 divisions. The least count of the instrument is a)2.0 cm
b)0.2 cm
c)0.02 cm
d)0.002 cm
Answers
Answered by
2
Answer:
c)0.02 cm
Explanation:
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Answered by
5
Answer:
(c) 0.02 cm
Explanation:
The least count of a Vernier scale can be calculated using the following formula:
L.C = Smallest Reading of Main Scale/Total Number of Divisions on Vernier Scale.
The question already states that the vernier scale has 10 divisions.
Since there are 20 divisions in 4 cm of the main scale, 1 cm on main scale contains 5 divisions.
Since the least count of the main scale, will always be in cm, smallest reading of main scale = 1/5 = 0.2 cm.
Using the L.C formula,
L.C = Smallest Reading of Main Scale/Total Number of Divisions on Vernier Scale.
L.C = 0.2/10 = 0.02 cm.
(c) 0.02 cm
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