Q. For photoelectric effect to take place, the metal used as the cathode should have_________
A) low melting point
B) high melting point
C) low resistance
D) Low work function
✔ Correct Answer: Low work function
Exam Insight
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A) low melting point
B) high melting point
C) low resistance
D) Low work function
✔ Correct Answer: Low work function
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