Question

In a vernier callipers, 10 VSD = 9 MSD and 1 cm on main scale is divided into 10 parts . While measuring the length of a line , the zero of VS is just ahead of 1.8 cm mark and 4th division of VS coincides with a main scale division . The length of line is
1. 1.800 cm
2. 1.840 cm
3. 1.804 cm
4. 1.844 cm​

Answer 1

Answer:

Explanation:Correct option is A)

Length of one main scale division is 1 mm.

Number of division on vernier scale =10

Main scale reading =1.8 cm

Division of vernier coinciding =4  

th

 

L.C=  

10

1

​

mm=0.1 mm=0.1 cm

 

Length of rod = main scale reading + vernier division coinciding × L.C

                      =1.8+4 X 0.01  

                      =1.84 cm