(A) Radius of muon =200 Radius of hydrogen Radius of H atom =r=πme2∈0n2h2 Radius of muon =rμ=π×200me2∈0n2h2rμ=200r (B) Velocity relation given is wrong (C) Ionization energy in e−H atom E=8ϵ02n2h2+me4 Eμ=8ϵ02n2h2200me4=200E (D) Momentum of H-atom mvr=2πnh Hence (A), (C), (D) are correct.
Muon (μ^-1 ) is negatively charged (| q|=| e|) with a mass m_μ=200 ~m_ e, where m_ e is the mass of the electron and e is the electronic charge. If…
JEE Main 2018 — Physics Modern Physics
2018mcqhard
Muon (μ−1) is negatively charged (∣q∣=∣e∣) with a mass mμ=200 me, where me is the mass of the electron and e is the electronic charge. If μ−1 is bound to a proton to form a hydrogen like atom, identify the correct statements (A) Radius of the muonic orbit is 200 times smaller than that of the electron (B) the speed of the μ−1 in the nth orbit is 2001 times that of the election in the nth orbit (C) The lonization energy of muonic atom is 200 times more than that of an hydrogen atom (D) The momentum of the muon in the nth orbit is 200 times more than that of the electron
Official previous-year question
Held on 15 Apr 2018 · Verified 6 Jul 2026.
Options
- A
(A), (B), (D)
- B
(B), (D)
- C
(C),(D)
- D
(A), (C), (D)
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