AP EAMCET · Chemistry · Structure of Atom
With what velocity must an electron travel, so that its momentum is equal to that of a photon of wavelength \(663 \mathrm{~nm}\) ?
- A \(1098 \mathrm{~m} / \mathrm{s}\)
- B \(109.8 \mathrm{~m} / \mathrm{s}\)
- C \(10.98 \mathrm{~m} / \mathrm{s}\)
- D \(1.098 \mathrm{~m} / \mathrm{s}\)
Answer & Solution
Correct Answer
(A) \(1098 \mathrm{~m} / \mathrm{s}\)
Step-by-step Solution
Detailed explanation
\[ \begin{aligned} & \lambda=\frac{h}{m v} \\ & v=\frac{h}{m \lambda} \end{aligned} \] Given,…
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