If a monochromatic light beam with quantum energy value of 1.6 eV incident upon a photocell where the work function of the target metal is 0.9 eV,what is the maximum kinetic energy of ejected electrons?
A)2.5 eV
B)1.8 eV
C)0.7 eV
D)3.2 eV
E)1.3 eV

Question

If a monochromatic light beam with quantum energy value of 1.6 eV incident upon a photocell where the work function of the target metal is 0.9 eV,what is the maximum kinetic energy of ejected electrons?
A)2.5 eV
B)1.8 eV
C)0.7 eV
D)3.2 eV
E)​1.3 eV

Quizplus · Accepted Answer

The maximum kinetic energy of the ejected electrons can be calculated using the photoelectric equation: Kinetic Energy = Photon Energy - Work Function. Therefore, the maximum kinetic energy = 1.6 eV - 0.9 eV = 0.7 eV.

If a Monochromatic Light Beam with Quantum Energy Value of 1.6