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Two identical metal plates show photoele...

Two identical metal plates show photoelectric effect by a light of wavelength `lambda_A` falling on plate A and `lambda_B` on plate B`(lambda_A=2lambda_B)`. The maximum kinetic energy is

A

`K_A = 2K_B`

B

`K_Agtfrac{K_B}{2}`

C

`2K_A = K_B`

D

`K_Altfrac{K_B}{2}`

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