Main scale division of vernier calliper is 1 mm and vernier scale division are in A.P. ; 1^{st} divi

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1.Units, Dimensions and Measurement

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Main scale division of vernier calliper is $1\ mm$ and vernier scale division are in $A.P. ; 1^{st}$ division is $0.95\ mm$ ; $2^{nd}$ division is $0.9\ mm$ and so on. When an object is placed between jaws of vernier calliper, zero of vernier lies between $3.1\ cm$ and $3.2\ cm$ and $4^{th}$ division of vernier coincide with main scale division. Reading of vernier is .......... $cm$

A

$3.12$

B

$3.14$

C

$3.15$

D

$3.18$

Solution

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Standard 11

Physics

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