Question

Preferable devices used to measure distance of $10^0 m$, $10^{-3.5} m$ and $10^{-5}m$ are

• A. metre scale, Vernier calliper, screw gauge
• B. metre scale, screw gauge, Vernier calliper
• C. screw gauge, Vernier calliper, metre scale
• D. Vernier calliper, metre scale, screw gauge

Answer 1

Answer: (A)

metre scale, Vernier calliper, screw gauge

Answer 2

Scales and measuring tapes etc. are used to measure distances from $10^{-3}m$ to $10^2m$ . Vernier calliper is used to measure distances upto $10^{-4}m$. Screw gauge is used to measure distances upto $10^{-5}m$.