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Light of wavelength 488 nm is produced by an argon laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping (cut-off) potential of photoelectrons is 0.38 V. Find the work function of the material from which the emitter is made.

Light of wavelength 488 nm is produced by an argon laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping (cut-off) potential of photoelectrons is 0.38 V. Find the work function of the material from which the emitter is made.

Grade:11

1 Answers

Vikas TU
14149 Points
9 months ago
Dear student 
eVo = hv - Qo 
eVo = hc/lambda - Qo 
Qo = hc/lambda -eVo 
Put all the values 
Qo = 2.17eV 
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