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Name the part of the vernier callipers which is used to measure the following
External diameter of a tube
Explain the terms : Least count of a screw gauge.
How are they determined?
Define metre in terms of the wavelength of light.
The main scale of vernier callipers has 10 divisions in a centimetre and 10 vernier scale divisions coincide with 9 main scale divisions. Calculate
- pitch
- L.C. of vernier callipers.
What do you understand by the term zero error?
What do you understand by the following term as applied to micrometre screw gauge?
Baseline
What do you understand by the term least count of screw?
What is the least count in the case of the following instrument?
Spring balance
What is the zero error of a screw gauge?
The main scale reading while measuring the thickness of a rubber ball using Vernier caliper is 7 cm and the Vernier scale coincidence is 6. Find the radius of the ball.
