Light loss in fibre-optic level sensors

Q.  In fibre-optic level sensors, the amount of light loss depends on
- Published on 10 Nov 15

a. The proportion of cable that is submerged in the liquid
b. Amount of light which is reflected back
c. The proportion of cable that is not in the liquid
d. Amount of light which is not reflected back

ANSWER: The proportion of cable that is submerged in the liquid

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