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2nW light of wave length 4400Å is incident on photo sensitive surface of Cs. If quantum efficiency is 0.5%,

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2nW light of wave length 4400Å is incident on photo sensitive surface of Cs. If quantum efficiency is 0.5%, what will be the value of photoelectric current?

(A) 1.56 × 10–6 μA 

(B) 2.56 × 10–6 μA

(C) 4.56 × 10–6 μA

(D) 3.56 × 10–6 μA

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The correct option is (D) 3.56 × 10–6 μA.

Explanation:

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