When light of wavelength 300 nm or less...

When light of wavelength 300 nm or less falls on aphotoelectric 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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