When light of wavelength 300 nm or less...

When light of wavelength 300 nm or less falls on a photoelectric emitter A, photoelectrons are emitted. For another emitter B, light of wavelength 600 nm is sufficient for releasing photoelectorns. The ratio of the work function of emitter A to B is

`1 : 2`

`2 : 1`

`4 : 1`

`1 : 4`

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