What is the zero error of a screw gauge?

प्रश्न

एका वाक्यात उत्तर

उत्तर

If the zero of the circular scale does not coincide with the zero of the main scale (pitch scale) when the end of the movable screw is brought in contact with the fixed end then the screw gauge is said to have a zero error.

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Q 44 Q 43 Q 45

पाठ 1: Measurements and Experimentation - Exercise 5 [पृष्ठ ४८]

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फ्रँक Physics Part 1 [English] Class 9 ICSE

पाठ 1 Measurements and Experimentation
Exercise 5 | Q 44 | पृष्ठ ४८

संबंधित प्रश्‍न

When a screw gauge with a least count of 0.01 mm is used to measure the diameter of a wire, the reading on the sleeve is found to be 1 mm and the reading on the thimble is found to be 27 divisions.

(i) What is the diameter of the wire in cm?

(ii) If the zero error is +0.005 cm, what is the correct diameter?

Fig., below shows the reading obtained while measuring the diameter of a wire with a screw gauge. The screw advances by 1 division on the main scale when circular head is rotated once.

Find:
(i) Pitch of the screw gauge,
(ii) Least count of the screw gauge and
(iii) The diameter of the wire.

Figure shows the position of vernier scale while measuring the external length of a wooden cylinder.

What is the length recorded by the main scale?
Which reading of vernier scale coincides with the main scale?
Calculate the length.

A micrometre screw gauge having a positive zero error of 5 divisions is used to measure diameter of a wire, when reading on the main scale is 3rd division and the 48th circular scale division coincides with baseline. If the micrometer has 10 divisions to a centimetre on the main scale and 100 divisions on a circular scale, calculate