Q8 · 2023 · Paper 1Simple familiar1 mark
QUESTION 8
Incident light with a frequency of 1.70 × 1015 Hz is shone onto a metal surface with a work function of 1.00 × 10-18 J. Determine the kinetic energy of a photoelectron ejected from the metal surface.
(A)
7.9 × 10-1 eV
(B)
1.7 × 10-15 eV
(C)
1.3 × 10-19 eV
(D)
2.0 × 10-38 eV
WORKED SOLUTION
1 markAnswer A
ANSWER
A
Worked solution
. Substitution gives about J, which is approximately eV. Option A.
Selects option A.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.