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Which metal has the highest work function?
APalladium
BPlutonium
CPlatinum
DPotassium
Answer & Solution
Correct answer: C. Platinum
1. Work function varies from metal to metal.
2. The work function of platinum is the highest in the table.
3. Caesium has the lowest.
_Source: NCERT Class 12 Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_
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