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Photons of frequency v are incident on t...

Photons of frequency v are incident on the surfaces of two metals A and B of threshold frequencies `3/4v` and `2/3 v` respectively. The ratio of the maximum kinetic energy of electrons emitted from A to B is

A

`2:3`

B

`4:3`

C

`3:4`

D

`3:2`

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