NEET 2018 · PhysicsEnergy levelsPrevious Year Question
The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom is:
Answer: (B) 1 : –1. Answer: (b) 1 : –1 Solution: In a Bohr orbit KE = +13.6Z²/n² eV = −Eₙ, while total energy Eₙ = −13.6Z²/n² eV.
- A.2 : –1
- B.1 : –1✓
- C.1 : 1
- D.1 : –2
Correct Answer
(B) 1 : –1
Solution & Explanation
Answer: (b) 1 : –1 Solution: In a Bohr orbit KE = +13.6Z²/n² eV = −Eₙ, while total energy Eₙ = −13.6Z²/n² eV. So KE : E = (−Eₙ) : Eₙ = 1 : −1.
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