Question
Identify the instrument shown in the picture below ?
| A. |
Otoscope.
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| B. |
Ophthalmoscope.
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| C. |
Refractometer.
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| D. |
None of the above.
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Show Answer
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Correct Answer � C
Explanation
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Ans:C.) Refractometer.
The image shown is of a Hand held Refractometer
Refractometer
- It is a laboratory or field device for the measurement of an index of refraction (refractometry). .
- A traditional hand held refractometer is an analog instrument for measuring a liquid’s refractive index.
- It works on the critical angle principle by which lenses and prisms project a shadow line onto a small glass reticle inside the instrument, which is then viewed by the user through a magnifying eyepiece.
- There are many types of refractometers and the most common types are Abbe’s refractometer, Pulfrich refractometer, Immersion refractometer.
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