Igcse Model Questions Vol1 2017 Physics Question 17

Practice objective / multiple choice question 17 from the 2017 Igcse Model Questions Vol1 Physics examination.

Igcse Model Questions Vol1 2017 Physics Objective / Multiple Choice Hard Difficulty
Question 17 IGCSE_MODEL_QUESTIONS_VOL1 • 2017 • PHYSICS • objective

An atom has energy levels given by \(E_n = -\dfrac{13.6\text{ eV}}{n^2}\). An electron initially in level \(n=4\) makes two successive transitions: first to \(n=2\) and then to \(n=1\), emitting a photon each time. (a) Find the wavelength of the photon emitted in the first transition. (b) Find the total energy released in both transitions (in eV). (c) Express the frequency of the photon from the second transition as a multiple of the frequency of the first photon.

Answer Options

Correct Answer A. a) 486 nm; b) 12.75 eV; c) 4 times the first frequency
B. a) 450 nm; b) 12.0 eV; c) 2 times the first frequency
C. a) 434 nm; b) 13.6 eV; c) 3 times the first frequency
D. a) 500 nm; b) 11.5 eV; c) 5 times the first frequency
Correct Answer
A
Correct Option:
a) 486 nm; b) 12.75 eV; c) 4 times the first frequency

About This Question

This is Igcse Model Questions Vol1 2017 Physics Question 17. It is one of the objective questions from the 2017 Igcse Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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