Question : For photoelectric effect to take place, the metal used as the cathode should have_________
Option 1: high melting point
Option 2: low melting point
Option 3: low work function
Option 4: low resistance
Correct Answer: low work function
Solution : The correct option is low work function.
Work function is the minimum energy required to remove an electron from the surface of the metal. A lower work function means that it requires less energy to liberate an electron. So, for the photoelectric effect to take place, the metal used as the cathode should have alow work function.
Related Questions
Know More about
Staff Selection Commission Combined Grad ...
Result | Eligibility | Application | Selection Process | Preparation Tips | Admit Card | Answer Key
Get Updates Brochure
Your Staff Selection Commission Combined Graduate Level Exam brochure has been successfully mailed to your registered email id “”.
