Photoelectric emission is observed from a metallic surface for frequencies 'v1' and 'v2' of the incident light rays. If the ratio of maximum value of the kinetic energy of the photoelectrons emitted in first case to that in second case is 2: K, then the threshold frequency of the metallic surface is :[MHT-CET 2023]

Question:

Photoelectric emission is observed from a metallic surface for frequencies ‘v1’ and ‘v2’ of the incident light rays. If the ratio of maximum value of the kinetic energy of the photoelectrons emitted in first case to that in second case is 2: K, then the threshold frequency of the metallic surface is :[MHT-CET 2023]

Options :

(a) Kv1-v2/k-1
(b) Kv1-2v2/k-2
(c) K-1/Kv1-v2
(d) K-2/Kv1-2V2

Answer :

(b) Kv1-2v2/k-2

Answer Steps :

step 1:

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