Year: 2019
Topic: Experimental skills
Time :
1. The main scale of a vernier callipers has n divisions/cm. n divisions of the vernier scale coincide with (n-1) divisions of main scale. The least count of the vernier callipers is,
(1). 1/(n + 1)(n − 1)cm
(2). 1/ncm
(3). 1/n
2
cm
(4). 1/n(n+1)cm