Match each length measuring instrument on the left with its appropriate application and pr… — JAMB UTME

Match each length measuring instrument on the left with its appropriate application and precision on the right.

Metre ruleMeasuring the height of a laboratory desk with a precision of $1\text{ mm}$ ( $0.1\text{ cm}$ )
Vernier caliperMeasuring the internal diameter of a narrow cylinder with a precision of $0.1\text{ mm}$ ( $0.01\text{ cm}$ )
Micrometer screw gaugeMeasuring the thickness of a thin glass cover slip with a precision of $0.01\text{ mm}$ ( $0.001\text{ cm}$ )
Measuring tapeMeasuring the distance around a large room or tree trunk over several metres

Answer

Metre rule pairs with measuring laboratory desk height (precision

1\text{ mm}

); Vernier caliper pairs with measuring internal tube diameter (precision

0.1\text{ mm}

); Micrometer screw gauge pairs with measuring glass cover slip thickness (precision

0.01\text{ mm}

); Measuring tape pairs with measuring distances over several metres.

Each instrument is correctly matched to its standard precision and intended application: the metre rule measures moderate lengths to within

1\text{ mm}

; the Vernier caliper measures internal and external dimensions to within

0.1\text{ mm}

; the micrometer screw gauge measures small thicknesses to within

0.01\text{ mm}

; and the measuring tape measures long or curved distances.

Step-by-Step Solution

Determine the least count (precision) and functional design of each measuring instrument.

Metre rule has a least count of

1\text{ mm}

; Vernier caliper has a least count of

0.1\text{ mm}

(

0.01\text{ cm}

) and possesses internal jaws; Micrometer screw gauge has a least count of

0.01\text{ mm}

; Measuring tape is flexible and suitable for long distances.

Each instrument is engineered for a specific range of dimensions and required degree of precision.

Match each instrument to the scenario requiring its specific precision and physical capability.

Metre rule matches desk height; Vernier caliper matches internal tube diameter; Micrometer screw gauge matches thin glass sheet thickness; Measuring tape matches large room dimensions.

Selecting the proper instrument minimizes measurement uncertainty and matches physical constraints.

Key Concept

Instrument selection based on least count, precision requirements, and physical geometry

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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