Selina Solutions Class 9 Physics Solutions for Exercise 1B in Chapter 1 - Chapter 1 – Measurements and Experimentation

Question 13 Exercise 1B

A microscope has its main scale with 20 divisions in 1cm and vernier scale with 25 divisions, the length of which is equal to the length of 24 divisions of main scale. The least count of microscope is:

(a) 0.002cm

(b) 0.001cm

(c) 0.02cm

(d) 0.01cm


(a) 0.002cm

The least count of any instrument is the smallest measurement that can be taken accurately

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