A and B are two metals with threshold frequencies 1.8 x 10¹⁴ Hz and 2.2 x 10¹⁴ Hz. Two identical photons of energy 0.825 eV each are incident on them. Then photoelectrons are emitted in (Take h=6.6 x 10³⁴ Js)

Options

(a) B alone
(b) A alone
(c) neither A nor B
(d) both A and B

Correct Answer:

A alone

Explanation:

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