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Quantum theory — Question 139

Original QCE Vault practice · 6 marks

Q139 · Practice questionComplex familiar6 marks

QUESTION 139 (6 marks)

For hydrogen,

E_n=-\frac{13.6\,\mathrm{eV}}{n^{2}}

. An atom emits a photon in the transition

n=5

to

n=2

.

Original diagram for Physics Paper 2 question 09

a)

Determine the photon energy in

eV

and joules.

[3 marks]

b)

Calculate the wavelength.

[2 marks]

c)

State whether the transition is emission or absorption and why.

[1 mark]

Question linkSyllabus coverage

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