Solved UPSC CDS/OTA Question
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Q · Modern PhysicsMedium · 45s
Which one of the following phenomena provides direct evidence of the quantisation of energy?
TopicModern Physics
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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The photoelectric effect demonstrates that energy is absorbed in discrete quanta (photons).
Final Answer: Option B - Photoelectric Effect