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When 1 centimetre thick surface is illuminated with light of wavelength λ, the stopping potential is V. when the same surface is illuminated by light of wavelength 2 λ, the stopping potential is V/3. Threshold wavelength for metallic surface is:
  • a)
    4 λ/5
  • b)
    4 λ
  • c)
    6 λ
  • d)
    8 λ/3
Correct answer is option 'A'. Can you explain this answer?
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When 1 centimetre thick surface is illuminated with light of wavelength λ, the stopping potential is V. when the same surface is illuminated by light of wavelength 2 λ, the stopping potential is V/3. Threshold wavelength for metallic surface is:a)4 λ/5b)4 λc)6 λd)8 λ/3Correct answer is option 'A'. Can you explain this answer?
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