Waec Physics Past Questions For Year 1990

Question 61

A metal is illuminated with a radiation of energy 6.88eV If the kinetic energy of the emitted electrons is 1.5OeV, calculate the work function of the metal.

waec 1990

• A. 0.22eV
• B. 4.59eV
• C. 5.38eV
• D. 8.38eV
• E. 10.32eV