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DIMENSIONS AND MEASUREMENT OF PHYSICAL QUANTITIES

CONTENT

  1. Measurement of Length/Distance
  2. Measurement of Mass/Weight
  3. Measurement of Volume
  4. Measurement of Area
  5. Measurement of Time
  6. Units of Measurement in Industries

 

 

Measurement of Length/Distance

Length is measured using the following instruments.

(a) Metre Rule: A metre rule is a measuring device calibrated in centimetres (cm) with a range of 0 – 100cm. In using the metre rule, the eye must be fixed vertically on the calibration to avoid parallax errors. The smallest reading that can be obtained on a metre rule is 0.1cm (0.01cm).

(b) Callipers: These are used in conjunction with metre rule for measuring diameter of tubes, thickness of sheet, etc. The callipers are of two types –

(i) The external calliper and

(ii) The internal calliper.

The external calliper is used to measure the external diameters of solid objects; while the internal calliper is used to measure the internal diameters of solid objects.

(c) Vernier calliper

The vernier calliper can be used for measuring smalllinear length and diameters of objects within the  range of 0-12cm at least.

Lesson tags: Physics Lesson Notes, Physics Objective Questions, SS1 Physics, SS1 Physics Evaluation Questions, SS1 Physics Evaluation Questions First Term, SS1 Physics First Term, SS1 Physics Objective Questions, SS1 Physics Objective Questions First Term
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