Neco 2023 Physics Question 20

Practice objective / multiple choice question 20 from the 2023 Neco Physics examination.

Neco 2023 Physics Objective / Multiple Choice Hard Difficulty

Question 20 NECO • 2023 • PHYSICS • objective

An electron in a hydrogen atom makes a transition from the \(n=5\) level to the \(n=2\) level, emitting a photon. (a) If this photon is absorbed by another hydrogen atom whose electron is initially in the \(n=2\) state, to which principal quantum number \(n\) is the electron excited? (b) Assuming the same photon energy is instead given to a free electron (photoelectric effect), calculate the speed of that electron in metres per second, expressing your answer in scientific notation with two significant figures.

A. n = 4; 1.2×10^6 m\/s

Correct Answer B. n = 5; 1.0×10^6 m/s

C. n = 3; 9.0×10^5 m\/s

D. n = 6; 2.0×10^6 m\/s

Correct Answer

Correct Option:

n = 5; 1.0×10^6 m/s

This is Neco 2023 Physics Question 20. It is one of the objective questions from the 2023 Neco Physics examination.

Difficulty level: Hard .

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Chat with Support