JEE Main202228 Jun 2022Morning ShiftChemistryStructure of AtomActual
If the work function of a metal is 6 . 63 × 10 - 19 J , the maximum wavelength of the photon required to remove a photoelectron from the metal is____ nm . Nearest integer) [Given : h = 6 . 63 × 10 - 34 J s , and c = 3 × 10 8 m s - 1 ]
Correct answer
0
Step-by-step solution
E incident = W 0 + K . E . As K.E is zero E incident = W 0 6 . 63 × 10 - 19 = hc λ = 6 . 63 × 10 - 34 × 3 × 10 8 λ λ = 3 × 10 - 7   m = 300   nm .