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 ]

Question

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 ],

MARKS App · Accepted Answer

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 .

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