Physics
Identify the correct use of the thimble of a screw gauge:
- To read length correct up to 0.01 mm
- To read length correct up to 1 mm
- To mark main scale and base line
- To mark circular scale.
Related Questions
On bringing the two jaws of a vernier callipers together, the 6th division of vernier scale coincides with the main scale. If the least count of the vernier callipers is 0.01 cm, then its zero error is:
- +0.06 cm
- +0.6 cm
- +0.006 cm
- +0.001 cm
A microscope has its main scale with 20 divisions in 1 cm and vernier scale with 25 divisions, the length of which is equal to the length of 24 divisions of main scale. The least count of microscope is :
- 0.002 cm
- 0.001 cm
- 0.02 cm
- 0.01 cm
The circular head of a screw gauge is divided into 50 divisions and the screw moves 1 mm ahead in two revolutions of the circular head. Its pitch would be:
- 0.05 cm
- 0.001 cm
- 0.5 cm
- 0.01 cm
Identify the incorrect statement from the following :
(a) A screw gauge is used to measure very small dimensions like the thickness of a wire or sheet.
(b) Vernier callipers is used to measure larger dimensions like the diameter of a sphere, internal or external diameter lengths, etc.
(c) Vernier callipers works on the principle of a sliding scale to measure fractional parts of a main scale.
(d) Vernier callipers has a higher precision with a larger least count whereas screw gauge has a lower precision with a smaller least count.