DP Physics (last assessment 2024)

Question 18N.2.HL.TZ0.5a.i

Date	November 2018	Marks available	[Maximum mark: 3]	Reference code	18N.2.HL.TZ0.5a.i
Level	HL	Paper	2	Time zone	TZ0
Command term	Determine	Question number	a.i	Adapted from	N/A

a.i.

[Maximum mark: 3]

18N.2.HL.TZ0.5a.i

The diagram shows the position of the principal lines in the visible spectrum of atomic hydrogen and some of the corresponding energy levels of the hydrogen atom.

(a.i)

Determine the energy of a photon of blue light (435nm) emitted in the hydrogen spectrum.

[3]

Markscheme

identifies λ = 435 nm ✔

E = « $\frac{{hc}}{\lambda }$ =» $\frac{{6.63 \times {{10}^{ - 34}} \times 3 \times {{10}^8}}}{{4.35 \times {{10}^{ - 7}}}}$ ✔

4.6 ×10⁻¹⁹ «J» ✔

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Core

Core » Topic 7: Atomic, nuclear and particle physics » 7.1 – Discrete energy and radioactivity

Core » Topic 7: Atomic, nuclear and particle physics

Question 18N.2.HL.TZ0.5a.i

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