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The threshold wavelength for photoelectric emission from a material is 5200 A. Photo-electrons will be emitted when this material is illuminated with monochromatic radiation from a [IIT JEE 1982; MP PMT 1992; MP PET 1999; UPSEAT 2001; KCET 2004; J & K CET 2004; BHU 2004]
  • a)
     50 watt infrared lamp
  • b)
     1 watt infrared lamp
  • c)
     50 watt ultraviolet lamp
  • d)
     1 watt ultraviolet lamp
  • e)
     (e) Both (c) and (d)
Correct answer is option `D`. Can you explain this answer?
Verified Answer
The threshold wavelength for photoelectric emission from a material is...
The threshold wavelength is 
. For a photoelectric emission to take place the wavelength of incident light must be less than the threshold value. The wavelength of UV rays is 
 . so 
Photoelectrons will be emitted when this material is illuminated with monochromatic radiation from a 
 ultraviolet lamp
.
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The threshold wavelength for photoelectric emission from a material is 5200 A. Photo-electrons will be emitted when this material is illuminated with monochromatic radiation from a [IIT JEE 1982; MP PMT 1992; MP PET 1999; UPSEAT 2001; KCET 2004; J & K CET 2004; BHU 2004]a)50 watt infrared lampb)1 watt infrared lampc)50 watt ultraviolet lampd)1 watt ultraviolet lampe)(e) Both (c) and (d)Correct answer is option `D`. Can you explain this answer?
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The threshold wavelength for photoelectric emission from a material is 5200 A. Photo-electrons will be emitted when this material is illuminated with monochromatic radiation from a [IIT JEE 1982; MP PMT 1992; MP PET 1999; UPSEAT 2001; KCET 2004; J & K CET 2004; BHU 2004]a)50 watt infrared lampb)1 watt infrared lampc)50 watt ultraviolet lampd)1 watt ultraviolet lampe)(e) Both (c) and (d)Correct answer is option `D`. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The threshold wavelength for photoelectric emission from a material is 5200 A. Photo-electrons will be emitted when this material is illuminated with monochromatic radiation from a [IIT JEE 1982; MP PMT 1992; MP PET 1999; UPSEAT 2001; KCET 2004; J & K CET 2004; BHU 2004]a)50 watt infrared lampb)1 watt infrared lampc)50 watt ultraviolet lampd)1 watt ultraviolet lampe)(e) Both (c) and (d)Correct answer is option `D`. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The threshold wavelength for photoelectric emission from a material is 5200 A. Photo-electrons will be emitted when this material is illuminated with monochromatic radiation from a [IIT JEE 1982; MP PMT 1992; MP PET 1999; UPSEAT 2001; KCET 2004; J & K CET 2004; BHU 2004]a)50 watt infrared lampb)1 watt infrared lampc)50 watt ultraviolet lampd)1 watt ultraviolet lampe)(e) Both (c) and (d)Correct answer is option `D`. Can you explain this answer?.
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