TS EAMCET · Physics · Atomic Physics
The collision of an electron with kinetic energy \(5.5 \mathrm{eV}\) and a hydrogen atom in its ground state can be described as
- A completely inelastic
- B may be completely inelastic
- C may be partially elastic
- D elastic
Answer & Solution
Correct Answer
(D) elastic
Step-by-step Solution
Detailed explanation
Given, kinetic energy of electron \(=5.5 \mathrm{eV}\). The energy required to excite a hydrogen atom from ground state \((n=1)\) to first excited state \((n=2)\) is \(\begin{aligned} \Delta E & =E_2-E_2 \\ & =-3.4-(-13.6)=10.2 \mathrm{eV} \end{aligned}\) When an electron…
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