MCQ
Why are alkali metals most suited as photo$-$sensitive metals?
- AHigh frequency
- BZero rest mass
- CHigh work function
- ✓Low work function
✓
Answer
Correct option: D.
Low work function
Alkali metals have low work functions. Even visible radiation can eject out electrons from them. So alkali metals are the most suitable photo$-$sensitive metals.
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