AP EAMCET · PHYSICS · Dual Nature of Matter
A particle of mass \(1 \times 10^{-30} \mathrm{~kg}\) and electric change \(1.6 \times 10^{-19} \mathrm{C}\) has de-Broglie wavelength \(660 \mathrm{~nm}\). Then kinetic energy of this particle is
(Planck's constant, \(h=6.6 \times 10^{-34} \mathrm{~J}-\mathrm{s}\) )
- A \(42 \times 10^{-6} \mathrm{eV}\)
- B \(2.5 \times 10^{-6} \mathrm{eV}\)
- C \(1.3 \times 10^{-6} \mathrm{eV}\)
- D \(3.1 \times 10^{-6} \mathrm{eV}\)
Answer & Solution
Correct Answer
(D) \(3.1 \times 10^{-6} \mathrm{eV}\)
Step-by-step Solution
Detailed explanation
de-Broglie wavelength is given by \[ \lambda=h / p \] \(\Rightarrow\) Momentum of particle,…
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