Question Detail

PHY 102 Test Compilation PHY 102 28 Objective Question

Question

Evaluate the wavelength of the photon emitted as an electron falls from the 7th orbit in the Pfund series.
Options
A 7.1 x 10-12 m
B 1.21 x 10-7 m
C 4.65 x 10-6 m
Correct Answer
D 2.14 x 10-8 m
Correct Answer

Option C is the correct answer.

Detailed Explanation

Pfund series ends at nf=5. 1/lambda=R(1/25-1/49)=2.15e5. lambda=4.65e-6m.

Hint

Pfund series ends at nf=5.

Question Info