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Photoelectric emission is observed from a surface for frequencies v1 and v2 of the incident radiation (v1>v2). If the maximum kinetic energies of the photoelectrons in two cases are in ratio 1 : K then the threshold frequency v0 is given by

(a) v2-v1/K-1

(b) Kv1-v2/K-1

(c) Kv2-v1/K-1

(d) v2-v1/K

1 Answer

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Best answer

Correct Option  (b) Kv1-v2/K-1

Explanation: 

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