Question

Light of wavelength 500 nm is incident on a metal with work
function 2.28 eV. The de Broglie wavelength of the emitted
electron is: [2015 RS]
(a) < 2.8 × 10⁻⁹ m (b) ³. 2.8 × 10⁻⁹ m
(c) £ 2.8 × 10⁻¹² m (d) < 2.8 × 10⁻¹⁰ m

Answer 1

a.6287

b.2844

c.2859^90

d..2849^28