Question

Least count of
meter scale - 1mm,
vernier callipers - 0.1mm,
screw gauge and spherometer - 0.01mm.
Which has the least accuracy?

Answer 1

Explanation:

as the vernier calliper has more value than of screw guage and spherometer i.e 0.01 therefore it has more no. of divisions which can give u more accurate reading rather than of vernier.

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Answer 2

The meter scale will have the least accuracy.

• The least count of meter scale is 1mm. 1mm that is 0.1 cm is the smallest division that it has. So, the minimum value that it can measure is 0.1 cm

• The least count of vernier caliper is 0.1 mm that is 0.01 cm. The minimum value that it can measure will be up to 0.01 cm.

• The least count of screw gauge is 0.01 mm that is 0.001 cm. So, the least it can measure is 0.001 cm.

Among the three the most accurate value can be measured by screw gauge.