Question:
The principle of nephelometry is based on:
The principle of nephelometry is based on:
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Nephelometry = "90 degrees" = Scattered light; Turbidimetry = "Transmitted" light.
Updated On: May 15, 2026
- Measurement of intensity of absorbed light as a function of concentration of absorbed particles
- Measurement of intensity of transmitted light as a function of concentration of suspended particles
- Measurement of intensity of scattered light as a function of concentration of dispersed particles
- Measurement of intensity of scattered light as a function of path length
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The Correct Option is C
Solution and Explanation
Step 1: Concept
Nephelometry and Turbidimetry are analytical techniques used to measure the clarity of a suspension.
Step 2: Meaning
Scattering occurs when light hits suspended particles and is deflected in various directions.
Step 3: Analysis
While Turbidimetry measures the reduction in *transmitted* light (at 180$^\circ$), Nephelometry measures the intensity of *scattered* light, usually at a 90$^\circ$ angle to the source.
Step 4: Conclusion
The intensity of this scattered light is directly proportional to the concentration of the dispersed particles. Final Answer: (C)
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