The side of a cube is measured by Vernier callipers ( 10 divisons of the vernier scale , where 1 divison of main scale is 1 mm). The main scale reads `10 mm` and first division of vernier scale coincides with the main scale . The mass of the cube is `2.736 g` . Find the density of the cube in appropriate significant figures.

Explanation

Least count `= ((V.S-M.S))/(V.S)` Least count `=0.1mm`
legnth of side of cube `=M.S.R + V.S.R xx ` least count
`= 10 + 1 xx 0.1 = 10.1 mm`
density `= (mass)/(volume) = (2.735)/((10.1)^(3)) = 0.0026546`
using significant the correct answer would be `0.00265` .