In a vernier callipers if each centimetre of the main scale is divided into q equal parts and p vernier scale divisions coincide with p - 1 main scale divisions, then what will be the least count?

Question

In a vernier callipers if each centimetre of the main scale is divided into q equal parts and p vernier scale divisions coincide with p - 1 main scale divisions, then what will be the least count?, p q p - 1, q p, q - 1 p q, 1 p q

MARKS App · Accepted Answer

1 M S D = 1 q p × VSD = p - 1 × MSD ⇒ 1 VSD = p - 1 p q L . C . = 1 MSD - 1 VSD ⇒ 1 q - p - 1 p q = 1 p q

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