Solve the question step by step
Dear Student
Main scale reading is = 2.8 cm
Least count = Value of 1 division of main scale/ total number of division on vernier scale
LC = 0.1 cm/ 10 = 0.01 cm
Vernier scale = 3rd division is matching so
Vernier scale reading = 3 x L.C. = 3 x 0.01 cm =- 0.03 cm
Total reading = 2.8 cm + 0.03 cm = 2.83 cm
Regards
Main scale reading is = 2.8 cm
Least count = Value of 1 division of main scale/ total number of division on vernier scale
LC = 0.1 cm/ 10 = 0.01 cm
Vernier scale = 3rd division is matching so
Vernier scale reading = 3 x L.C. = 3 x 0.01 cm =- 0.03 cm
Total reading = 2.8 cm + 0.03 cm = 2.83 cm
Regards