Q. If threshold wavelength for a certain metal is $2000\mathring{\mathrm{A}}$ , then the work function of metal is
A) 6.2 MeV
B) 6.2 keV
C) 6.2 J
D) 6.2 eV
Explanation
The correct answer is Option D: 6.2 eV.
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.