AP EAMCET · Chemistry · Structure of Atom
What is the mass of a particle with a wavelength of \(3.313 Å\) moving with a speed of \(2.0 \times 10^8 \mathrm{~ms}^{-1}\) ?
- A \(1.0 \times 10^{-28} \mathrm{~kg}\)
- B \(2.0 \times 10^{-32} \mathrm{~kg}\)
- C \(1.0 \times 10^{-32} \mathrm{~kg}\)
- D \(2.0 \times 10^{-28} \mathrm{~kg}\)
Answer & Solution
Correct Answer
(C) \(1.0 \times 10^{-32} \mathrm{~kg}\)
Step-by-step Solution
Detailed explanation
According to de-Broglie relation: \(\lambda=\frac{h}{m v}\) where, \(h=\) Planck's constant \(=6.626 \times 10^{-34} \mathrm{Js}\) \(v=\) speed of moving particle \(m=\) mass of moving particle \(\lambda=\) wavelength of particle. Thus, \(m=\frac{h}{\lambda \times v}\) Given,…
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