Question

A hydrogen atom in its ground state absorbs 10.2 eV of energy. What is the orbital angular momentum is increased by?

(a) 4.22 × 10^-3 Js

(b) 2.11 × 10^-34 Js

(c) 3.16 × 10^-34 Js

(d) 1.05 × 10^-34 Js

The question was posed to me in an internship interview.

My question is from Bohr Model of the Hydrogen Atom topic in section Atoms of Physics – Class 12

Answer 1

Correct choice is (d) 1.05 × 10^-34 Js

Explanation: Increase in angular momentum = \(\frac {h}{2π}\).

\(\frac {h}{2π}\) = 6.6 × \(\frac {10^{-34}}{2}\) × 3.14

\(\frac {h}{2π}\) = 1.05 × 10^-34 Js.