Question

The main scale of a vernier callipers has n divisions/cm. n divisions of the vernier scale coincides with (n-1) divisions of main scale. The least count of vernier callipers is 1) 1/(n+1)(n-1) cm. 2). 1/n cm. 3) 1/n^2. Cm 4) 1/n(n+1). Cm

Answer 1

Answer:

$1 \: by \: n ^{2}$