JEE Main 2022 · 24 Jun · Shift 2 · Physics Q50

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PhysicsSingle correct+4 / -1Question 50 of 90

In Bohr's atomic model of hydrogen, let K, P and E are the kinetic energy, potential energy and total energy of the electron respectively. Choose the correct option when the electron undergoes transitions to a higher level :

All K, P and E increase.

K decreases, P and E increase.

P decreases, K and E increase.

K increases, P and E decrease.

Answer and worked solution

Official answer: B

Bohr model. $K=\dfrac{13.6}{n^2}$ eV, $P=-2K$ , $E=-K$ .

Higher $n$ . $K$ falls; $P$ and $E$ become less negative, so they increase.

(B)

Topics:Bohr model and hydrogen spectrum

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JEE Main 2022 · 24 Jun · Shift 2, Physics question 50