COMEDK · Physics · 27. Dual Nature of Matter
The energy that should be added to an electron to reduce its de-Broglie wavelength from \(1 \mathrm{~nm}\) to \(0.5 \mathrm{~nm}\) is
- A four times the initial energy
- B equal to the initial energy
- C twice the initial energy
- D thrice the initial energy
Answer & Solution
Correct Answer
(D) thrice the initial energy
Step-by-step Solution
Detailed explanation
Given, initial value of de-Broglie wavelength, \(\lambda_{1}=1 \mathrm{~nm}=1 \times 10^{-9} \mathrm{~m}\) Final value of de-Broglie wavelength, \(\lambda_{2}=0.5 \mathrm{~nm}=0.5 \times 10^{-9} \mathrm{~m}\) de-Broglie wavelength in terms of energy \(E\) is given as…
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