Neco 2023 Physics Question 34

Practice objective / multiple choice question 34 from the 2023 Neco Physics examination.

Neco 2023 Physics Objective / Multiple Choice Hard Difficulty

Question 34 NECO • 2023 • PHYSICS • objective

An electron in a hydrogen atom drops from the \(n=5\) to the \(n=2\) energy level, emitting a photon. The photon then passes through a diffraction grating that has \(5.0\times10^{5}\) lines per metre. The first‑order maximum is observed at an angle of \(30^{\circ}\). Is the observed angle consistent with the wavelength calculated from the atomic transition? If not, state the discrepancy between the wavelength implied by the grating and the theoretical wavelength, in nanometres (nm).

Correct Answer A. No, 566 nm

B. No, 450 nm

C. No, 620 nm

D. No, 500 nm

Correct Answer

Correct Option:

No, 566 nm

This is Neco 2023 Physics Question 34. It is one of the objective questions from the 2023 Neco Physics examination.

Difficulty level: Hard .

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