When a light of wavelength 4000 Å falls ...

When a light of wavelength 4000 Å falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, light of wavelength 6000 Å is suficient for photo emission. The work functions of the two emitters are in the ratio of

`3:2`

`3:5`

`5:3`

`2:3`

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