Micrometry Mastery
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Questions and Answers

What is micrometry?

  • Measurement of dimensions of planets in outer space
  • Measurement of dimensions of underwater organisms
  • Measurement of dimensions of buildings with a ruler
  • Measurement of dimensions of particles under a microscope (correct)

What is the scale employed in micrometry called?

  • Micrometer (correct)
  • Measuratron
  • Ruler
  • Scale-o-meter

How many divisions make up 1mm measurement on a stage micrometer?

  • 100 (correct)
  • 10
  • 50
  • 200

Where is the ocular micrometer usually placed for calibration?

<p>On the eye piece of the microscope (A)</p> Signup and view all the answers

What does the smallest division on a stage micrometer measure?

<p>0.01mm or 10µm (A)</p> Signup and view all the answers

MICROMETRY can be defined as the measure of dimensions of particles in view under a microscope. It is important to get the actual size of an object under view. In micrometry, the scale employed in the measurement of dimensions is called ______.

<p>micrometer</p> Signup and view all the answers

There are two types commonly used: The stage micrometer The ______.

<p>ocular micrometer</p> Signup and view all the answers

The stage micrometer is a standard scale with standard unit of measurement. It looks like a meter rule etched on a slide (the scale is similar to a glass slide but with a scale of measurement on it). It has 100 divisions (i.e lines) which make up 1mm measurement. The smallest division is 0.01mm (10µm). 100 lines = 1mm 1 line = 0.01mm 0r 10µm Note: although each division on a stage micrometer measures 0.01mm, dimensions are to be presented in ______.

<p>µm</p> Signup and view all the answers

The ocular micrometer is a circular glass plate with 100 divisions (lines) marked 0 – 10 and is without a standard unit. It is usually placed on the eye piece of the microscope and calibrated using the ______ mic.

<p>stage</p> Signup and view all the answers

MICROMETRY can be defined as the measure of dimensions of ______ in view under a microscope.

<p>particles</p> Signup and view all the answers

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