Q32.A stream of electrons from a heat filament was passed between two charge plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of hλ (where λ is wavelength associated with the electron wave) is given by: (1) √meV (2) √2 meV (3) me V (4) 2 me V
What This Question Tests
This question assesses the understanding of the de Broglie wavelength concept by linking the kinetic energy gained by an electron from a potential difference to its momentum.
Concepts Tested
Formulas Used
KE = eV
KE = p²/2m
λ = h/p
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📋 Question Details
- Chapter
- Atomic Structure
- Topic
- De Broglie wavelength
- Year
- 2016
- Shift
- 03 Apr
- Q Number
- Q32
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 2: Structure of Atom
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