Question

When with the vength of 400mm tais on a certain metal surface, the maximum inter of the emited photoelectrons is 110V Constansi Periale Part A What is the maximum kinetic energy of the photoelectrons when it wavelength 320 nm als on the same surface Ush-1.610-Jis for Planck's constant and c-3.00109 m/s for the speed of light and express your answer in electron voits. View Available in VALD V Submit

Answer 1

rithe brequery then the no ws then K.E. For photo electric ébrect writine at the incident photon is w. energy of the photon is latus Consider that the wore bonition orang of the metal is the ninetic energy of the election is erot horyc. wew.r given darta d=320 nm W = (he ne 12 2 800 nm ha 6.63 x 20-34 FENG w ) -ME) Copy (6.b) he (F); - M. E.) iz ne ( 2 ) (6.63 2010- 34 * 30108) (zo - You) Naroga X109

8 (K.F.), M. E) 22 6.63010734 x 30108 x 109 x 80 1.6 xlo-19 x 328 x 400 er. 6.63 x 3 mio P - 3648+9+19) 1.6016 19.89 25.6 0.777 er. - (KE) d = 1.50 ev. (K. E) da 1.50+ 0.777 ) er at the 2.277 eN. The maximum vinetic energy ке. photo eleton When the light of wane length it 2.277 er. 320 nm

8 (K.F.), M. E) 22 6.63010734 x 30108 x 109 x 80 1.6 xlo-19 x 328 x 400 er. 6.63 x 3 mio P - 3648+9+19) 1.6016 19.89 25.6 0.777 er. - (KE) d = 1.50 ev. (K. E) da 1.50+ 0.777 ) er at the 2.277 eN. The maximum vinetic energy ке. photo eleton When the light of wane length it 2.277 er. 320 nm