There are two Vernier calipers both of which have `1cm` divided into `10` equal divisions on the main scale. The vernier scale of the calipers `( c_(1))` has `10` equal divisions that correspond to `9` main scale divisions. The Vernier scale of the other calipers `( C_(2))` has `10` equal divisions that correspond to `11` main scale divisions. the reading of the two calipers are shown in the figure. the measured values (in cm) by calipers `C_(1) and C_(2)` respectively, are

Options

A. (a) `2.85 and 2.82`
B. (b) `2.87 and 2.83`
C. ( c ) `2.87 and 2.86`
D. (d) `2.87 and 2.87`

Answer

B

Explanation

For`C_(2)
`LgtC =1mm-1.1mm` [10VSD = 11mm]`
`L.C =-0.1mm = 0.01cm`
Reading = 2.8 + (10-7)xx0.01 = 2.83 cm`