Neco Model Questions Vol1 2023 Physics Question 23

Practice objective / multiple choice question 23 from the 2023 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2023 Physics Objective / Multiple Choice Hard Difficulty
Question 23 NECO_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • objective

A hydrogen atom in the \(n=3\) energy level absorbs a photon of wavelength \(410\ \text{nm}\) and becomes ionized. (a) Calculate the excess kinetic energy of the ejected electron in electron‑volts and joules. (b) Determine the speed of the electron after ionization.

Answer Options

Correct Answer A. Excess kinetic energy = 1.52 eV (2.44×10⁻¹⁹ J); speed ≈ 7.3×10⁵ m/s
B. Excess kinetic energy = 2.10 eV (3.36×10⁻¹⁹ J); speed ≈ 8.5×10⁵ m\/s
C. Excess kinetic energy = 0.85 eV (1.36×10⁻¹⁹ J); speed ≈ 5.9×10⁵ m\/s
D. Excess kinetic energy = 1.52 eV (2.44×10⁻¹⁹ J); speed ≈ 6.2×10⁵ m\/s
Correct Answer
A
Correct Option:
Excess kinetic energy = 1.52 eV (2.44×10⁻¹⁹ J); speed ≈ 7.3×10⁵ m/s

About This Question

This is Neco Model Questions Vol1 2023 Physics Question 23. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.

Difficulty level: Hard .

View More Neco Model Questions Vol1 2023 Physics Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

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