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  • The zero of the Vernier scale lies between  and <img alt="3.30 \mathrm{~cm}" sr

The zero of the Vernier scale lies between 3.25 \mathrm{~cm} and 3.30 \mathrm{~cm} of the main scale. The Vernier scale has 50 divisions equivalent to 2.425 \mathrm{~cm}. The 18th division of the Vernier scale exactly coincides with one of the main scale divisions. The diameter of an object is:

Option: 1

3.277 \mathrm{~mm}


Option: 2

3.277 \mathrm{~cm}


Option: 3

32.77 \mathrm{~cm}


Option: 4

3.277 \mathrm{~dm}


Answers (1)

best_answer

The readings on the main scale are 3.25 and 3.30

1 main scale divisions =0.05 \mathrm{~cm}

1 vernier scale division, =2.425 / 50=0.0485 \mathrm{~cm} / \mathrm{div}

Least count =0.05-0.0485=0.0015 \mathrm{~cm}

Diameter =$ MSR $+($ L.C x VSD $)

=3.25+(18 \times 0.0015)

=3.277 \mathrm{~cm}
 

Posted by

Gautam harsolia

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