Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A light source of wavelength λ illuminates a metal and ejects photo-electrons with (K.E.) max = 1 eV Another light source of wavelength 
, ejects photo-electrons from same metal with (K.E.) max = 4eV Find the value of work function?
Text Solution
Verified by ExpertsThe correct answer is:
C
Where, 
work function When the wavelength is 
,
When the wavelength is 
,
On solving equations (i) and (ii)
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