Q. The work function of a metal is
A) The energy for the electron to enter into the metal
B) The energy for producing $X$-ray
C) The energy is required for an electron to come out from metal surface
D) None of these
Explanation
The correct answer is Option C: The energy is required for an electron to come out from metal surface.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.