Consider the following statement:
(i) In Direct vernier Scale, (n - 1) division of main scale is divided into n divisions of vernier scale
(ii) In Rectrograde vernier, (n + 1) division of main scale is divided into n divisions of vernier scale
(iii) In Direct vernier scale, (n + 1) division of main scale is divided into n divisions of vernier scale
(iv) In Rectrograde vernier, (n - 1) division of main scale is divided into n division of vernier scale
Of these statements identify the correct one:1
(i) and (iv) are correct
2
(ii) and (iii) are correct
3
(iii) and (iv) are correct
4
(i) and (ii) are correct