Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
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