Two identical metal plates show photoele...

Two identical metal plates show photoelectric effect. Light of wavelength `lamda_A` falls on plate A and `lamda_B` fall on plate B and `lamda_A=2lamda_B`, The maximum KE of the photoelectrons are `K_A` and `K_B`, respectively, Which one of the following is true?

`2K_2=K_1`

`K_1 lt K_2/2`

`K_1 gt K_2/2`

`2K_1 = K_2`

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Two identical metal plates show photoelectric effect. Light of wavelength lamda_A falls on plate A and lamda_B fall on plate B lama_A=2lamda_B , The maximum KE of the photoelectrons are K_A and K_B , respectively, Which one of the following is true?

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