Advertisements
Advertisements
Question
The following diagrams (Fig. 5) show the use of a vernier caliper under three different situations. Study the diagrams carefully and note down the vernier readings in each case.
(a) Measuring the diameter of the rod
(b) Measuring Internal diameter of a cavity
(c) Measuring depth of a cavity
Advertisements
Solution
(a) Measuring the diameter of the rod
(b) Measuring Internal diameter of a cavity
(c) Measuring the depth of a cavity
Least count of vernier caliper = 0.01 cm
(i) Main scale reading = 5.5 cm
Vernier scale division coinciding with main scale = 6 Vernier scale reading = 6 × 0.01 cm = 0.06 cm
Diameter of rod = 5.5 + 0.06 = 5.56 cm
(ii) Main scale reading = 1.6 cm
Vernier scale division coinciding with main scale = 5
Vernier scale reading = 5 × 0.01 cm = 0.05 cm
Internal diameter of a cavity = 1.6 + 0.05 = 1.65 cm
(iii) Main scale reading = 3.1 cm
Vernier scale division coinciding with main scale = 5 Vernier scale reading = 5 × 0.01 cm = 0.05 cm
Depth of a cavity = 3.1 + 0.05 = 3.15 cm
APPEARS IN
RELATED QUESTIONS
Define the least count of vernier callipers. How do you determine it?
Name the part of the vernier callipers which is used to measure the following
External diameter of a tube
State the purpose of ratchet in a screw gauge.
The pitch of a screw gauge is 1 mm and the circular scale has 100 divisions. In measurement of the diameter of a wire, the main scale reads 2 mm and 45th mark on the circular scale coincides with the base line. Find
(i) The least count and
(ii) The diameter of the wire.
State the correction if the positive error is 7 divisions when the least count is 0.01 cm.
What do you understand by the following term as applied to micrometre screw gauge?
Baseline
What is meant by the pitch of a screw gauge? The pitch of a screw is 1 mm.
Find the reading of the instrument shown in the following figure.
On a vernier calliper, 25 vernier scale divisions are equal in length to 24 main scale divisions. One main scale division is 1 mm. Find the least count of the instrument.
