Physics Circle home Student Login

Home›Chapters›Atomic Structure PYQs›Bohr Model: Orbits, Speed & Angular Momentum›Question 77

NEET 2022 (Phase 2) · Bohr Model: Orbits, Speed & Angular Momentum

Bohr Model: Orbits, Speed & Angular Momentum question from NEET 2022 (Phase 2)

Q77NEET 2022 · PHASE 2Easy

Bohr Model: Orbits, Speed & Angular Momentum

Let R1 be the radius of the second stationary orbit and R2 be the radius of the fourth stationary orbit of an electron in Bohr's model. The ratio R1R2\frac{R_1}{R_2} is:

Show answer and solution

Answer: (b)

  1. r∝n2⇒R1R2=2242=416r \propto n^2 \Rightarrow \dfrac{R_1}{R_2} = \dfrac{2^2}{4^2} = \dfrac{4}{16}
  2. R1R2=0.25\dfrac{R_1}{R_2} = 0.25. So the answer is (b).
Report a mistake

More questions on Bohr Model: Orbits, Speed & Angular Momentum