MDCAT Physics MCQ #379

MDCAT Physics MCQ #379

1. Question 1

   Q1. A chemist wants to calculate the wavelength of the line emitted when an electron falls from the fifth orbit to the fourth orbit in a hydrogen atom.

   • A) λ = (R * (4^2)) * (1/(Δk * (5^2)))
   • B) λ = (R * (4^2) * (5^2)) * (1/Δk)
   • C) λ = (R * (5^2)) * (1/(Δk * (4^2)))
   • D) λ = (R * (5^2)) * (1/(Δk * (4^2) * (5^2)))

   Answer: λ = (R * (4^2)) * (1/(Δk * (5^2)))

   Explanation: Option A uses the formula for wavelength of the line emitted when an electron falls from a higher orbit to a lower orbit.