Question

The vernier constant of a travelling microscope is 0.001 cm. If 49 main scale divisions coincide with 50 main scale divisions, then the value of 1 main scale division is -

• A. 0.1 mm
• B. 0.4 mm
• C. 0.5 mm
• D. 1 mm

Answer 1

Answer: (C)

0.5 mm

Answer 2

0.001 cm = $\frac { 1 \mathrm { MSA } } { 50 }$ ,

1 M S A = 50 × 0.001 cm = 0.00 5 cm