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Commonly used photoemissive material is _______(a) gold(b) opium(c) tellurium(d) cesium-antimonyThis question was posed to me in a job interview.I'm obligated to ask this question of Photoelectric Transducers topic in chapter Transducers of Electrical Measurements

Answer»

The correct choice is (d) cesium-antimony

To ELABORATE: Cesium-antimony is the most commonly USED photoemissive material. The photoemissive material is housed in a glass tube. Photoemissive DEVICES are ALSO called as phototubes.



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