Question
Question: The recoil speed of a hydrogen atom after it emits a photon in going from n = 5 state to n = 1 state...
The recoil speed of a hydrogen atom after it emits a photon in going from n = 5 state to n = 1 state is–
A
4.718 ms–1
B
7.418 ms–1
C
4.178 ms–1
D
7.148 ms–1
Answer
4.178 ms–1
Explanation
Solution
P = E/c = mv