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The photoelectric work function of a certain metal is 2.5 eV.

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The photoelectric work function of a certain metal is 2.5 eV. If the metal is separately irradiated with photons of energy 3 eV and 4.5 eV, the ratio of the respective stopping potentials is

(A) 1 

(B) \(\cfrac23\)

(C) \(\cfrac14\)

(D) \(\cfrac15\)

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1 Answer

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by (41.1k points)

Correct option is (B) \(\cfrac23\)

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