A and B are two metals with threshold frequencies 1.8 × 10 14 Hz and 2.2 × 10 14 Hz. Two…
Physics · Class 12 · CBSE — Dual Nature of Radiation & Matter
A and B are two metals with threshold frequencies 1.8 × 1014 Hz and 2.2 × 1014 Hz. Two identical photons of energy 0.825 eV each are incident on them. Then photoelectrons are emitted in
(Take h = 6.6 × 10–34 J s)
(Take h = 6.6 × 10–34 J s)
- B alone
- A alone
- neither A nor B
- both A and B
Answer
(B) A alone
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