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Standard XII
Physics
Question

The best suitable metal for photoelectric effect is:
  1. Iron
  2. Steel
  3. Aluminium
  4. Cesium

A
Steel
B
Cesium
C
Iron
D
Aluminium
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Solution
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Photoelectric effect occurs easily if the metal has low ionization potential cesium, the alkali metal has low ionization potential, hence it is best suitable for photoelectric effect.

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