Solved UPSC CDS/OTA Question
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Q · Modern PhysicsMedium · 45s
The de Broglie wavelength of an electron increases when: Option: 7
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.
λ = h/p; as velocity decreases, momentum decreases, so wavelength increases.
7
Final Answer: Option D — Its velocity decreases
7