MHT CET202014 Oct 2020Evening ShiftPhysicsAtomic PhysicsActual
An electron makes a transition from an excited state to the ground state of a ydrogen like atom. out of the following statements which one is correct?
Options
- AK.E., P.E. and T.E. decreases.
- BK.E. decreases, P.E. increases but total energy remains the same.
- CE. increases but P.E. and T.E. decreases.
- DK.E. and T.E. decreases but P.E. increases.
Correct answer
B. K.E. decreases, P.E. increases but total energy remains the same.
Step-by-step solution
aligned T.E. &=-13.6 Z² n² eV , P.E. =2 T.E. and k . E . &=13.6 Z² n² eV aligned Hence if n decreases k.E increases but P.E. and T.E. decrease.