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 :
- (A)All K. P and E increase.
- (B)K decreases. P and E increase.✓ Correct
- (C)P decreases. K and E increase.
- (D)K increases. P and E decrease.
Answer: (B)
Solution
In Bohr's model, for hydrogen atom:
When electron transitions to a higher level (larger ):
Answer: (B) K decreases. P and E increase.
- Kinetic energy: (decreases as increases)
- Potential energy: (becomes less negative, i.e., increases as increases)
- Total energy: (becomes less negative, i.e., increases as increases)
When electron transitions to a higher level (larger ):
- K decreases
- P increases (becomes less negative)
- E increases (becomes less negative)
Answer: (B) K decreases. P and E increase.
JEE Main · 2022 · 24 Jun 2022 · Shift 2 · Single correct option