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CGP EDU Academic Team
Published on: August 13, 2026
The critical wavelength for producing photoelectric effect in tungsten is 2600 Å. What wavelength would be necessary to produce photoelectrons from tungsten having twice the kinetic energy of these produced at 2200 Å?
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(λ = 1907 Å)
Critical wavelength corresponds to work function.
Work function 
Also, KE at 
at 
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