If 50 Vernier divisions are equal to 49 main scale divisions of a travelling microscope and one smal

Question

If 50 Vernier divisions are equal to 49 main scale divisions of a travelling microscope and one smallest reading of main scale is 0.5 mm , the Vernier constant of travelling microscope is\

Professor PC Thomas Classes · Answer

(c) : Vernier constant $=[1$ M.S.D -1 V.S.D] As, 50 V.S.D = 49 M.S.D.\ 1V.S.D $=\frac{49}{50}$ M.S.D , 1 M.S.D $=0.5 \mathrm{~mm}$\ So, vernier constant $=\left[1ight.$ M.S.D $-\frac{49}{50}$ M.S.D $]$\ $=\left[1-\frac{49}{50}ight] 	imes 0.5=\frac{1}{50} 	imes 0.5=0.01 \mathrm{~mm}$.\