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Atoms and Nuclei question

2022 · Q138
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Atoms and Nuclei question

2022 · Q138

NEETPhysicsAtoms and NucleiMCQ+4 / −1

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{{{R_1}} \over {{R_2}}}R2​R1​​ is :

  1. A
    4
  2. B
    0.25
  3. C
    0.5
  4. D
    2
View written solutionFree

Correct answer: B

Radius of Bohr's orbit depends on principal quantum number (n) as

$R \propto {n^2}$

Now, $${{{R_1}} \over {{R_2}}} = {{{{(2)}^2}} \over {{{(4)}^2}}} = {1 \over 4} = 0.25$$

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