A Cesium photocell, with a steady potential difference of 60 V across it, is illuminated…
Chemistry · JEE Main · NTA Exams — Atomic Structure
A Cesium photocell, with a steady potential difference of 60 V across it, is illuminated by a bright point source of light 50 cm away. When the same light is placed 100 cm away, the photoelectrons emitted from the cell:
- are half as numerous
- are one quarter as numerous
- each carry one quarter of their previous energy
- each carry one quarter of their previous momentum
Answer
(A) are half as numerous
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