1.

Verncir constant of verneir scale = 0.1 mm on measuring diameter of shaft. Main scale reading = 1.7 cm. If main scale coincides with 5 division of verneir scale & zero error is -0.05 cm. Diameter of shaft in cm is:(a) 1.80 cm(b) 2.80 cm(c) 4.80 cm(d) 6.80 cm

Answer»

Correct option is (a) 1.80 cm

Reading = MSR + L.C x VS.R + correction 

Correction = -zero error = 0.05 cm

Reading 1.7 + 0.1 x 10-1 (5)  +0.05

= 1.7 + 0.05 + 0.05

⇒ 1.80 cm



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