Q: 11.29 The work function for the following metals is given:
Which of these metals will not give photoelectric emission for a radiation of wavelength from a laser placed away from the photocell? What happens if the laser is brought nearer and placed away?
The wavelength of the incident photons=
The energy of the incident photons is
Mo and Ni will not give photoelectric emission for radiation of wavelength from a .
If the laser is brought nearer no change will be there in case of Mo and Ni although there will be more photoelectrons in case of Na and K.