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The main scale of vernier callipers has 10 divisions in a centimetre and 10 vernier scale divisions coincide with 9 main scale divisions. Calculate pitch L.C. of vernier callipers.

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Question

The main scale of vernier callipers has 10 divisions in a centimetre and 10 vernier scale divisions coincide with 9 main scale divisions. Calculate

  1. pitch
  2. L.C. of vernier callipers.
Numerical
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Solution

Main scale divisions of vernier callipers in one centimetre = 10

Pitch = `"Unit of main scale"/"Number of divisions in the unit"`

= `1/10` cm

= 0.1 cm

Least count = `"Pitch"/"No. of vernier scale divisions"`

= `0.1/10` cm

= 0.01 cm

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Chapter 1: Measurements and Experimentation - Unit 3 Practice Problems 1

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Goyal Brothers Prakashan A New Approach to ICSE Physics [English] Class 9
Chapter 1 Measurements and Experimentation
Unit 3 Practice Problems 1 | Q 1

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