Solved UPSC CDS/OTA Question
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Q · Modern PhysicsMedium · 45s
The minimum energy needed to remove an electron from a metal surface is called: Option: 26
TopicModern Physics
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Work function is the minimum energy to liberate an electron from a metal surface.
26
Final Answer: Option B — Work function
26