4. The threshold frequency of a metal is 4 × 1014 s–1. The minimum energy which photons must possess to produce photoelectric effect with the metal is (h = 6.6 × 10–34 Js)

(A) 3.06 × 10–12 J

(B) 1.4 × 10–48 J

(C) 3.4 × 10–19 J

(D) 6.023 × 10–19 J

Question

4. The threshold frequency of a metal is 4 × 1014 s–1. The minimum energy which photons must possess to produce photoelectric effect with the metal is (h = 6.6 × 10–34 Js)

(A) 3.06 × 10–12 J

(B) 1.4 × 10–48 J

(C) 3.4 × 10–19 J

(D) 6.023 × 10–19 J

Deepak Patra · Answer

Threshold energy required for emission = hv 0 = 6.6 &times; 10 &ndash;34 &times; 4 &times; 10 14 = 2.64 &times; 10 &ndash;19 J

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4. The threshold frequency of a metal is 4 × 1014 s–1. The minimum energy which photons must possess to produce photoelectric effect with the metal is (h = 6.6 × 10–34 Js) (A) 3.06 × 10–12 J (B) 1.4 × 10–48 J (C) 3.4 × 10–19 J (D) 6.023 × 10–19 J

4. The threshold frequency of a metal is 4 × 1014 s–1. The minimum energy which photons must possess to produce photoelectric effect with the metal is (h = 6.6 × 10–34 Js)

(A) 3.06 × 10–12 J

(B) 1.4 × 10–48 J

(C) 3.4 × 10–19 J

(D) 6.023 × 10–19 J

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4. The threshold frequency of a metal is 4 × 1014 s–1. The minimum energy which photons must possess to produce photoelectric effect with the metal is (h = 6.6 × 10–34 Js) (A) 3.06 × 10–12 J (B) 1.4 × 10–48 J (C) 3.4 × 10–19 J (D) 6.023 × 10–19 J

4. The threshold frequency of a metal is 4 × 1014 s–1. The minimum energy which photons must possess to produce photoelectric effect with the metal is (h = 6.6 × 10–34 Js) (A) 3.06 × 10–12 J (B) 1.4 × 10–48 J (C) 3.4 × 10–19 J (D) 6.023 × 10–19 J

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4. The threshold frequency of a metal is 4 × 1014 s–1. The minimum energy which photons must possess to produce photoelectric effect with the metal is (h = 6.6 × 10–34 Js)

(A) 3.06 × 10–12 J

(B) 1.4 × 10–48 J

(C) 3.4 × 10–19 J

(D) 6.023 × 10–19 J