Question

0) VUUTUU
The work function of caesium metal is 2.12 eV.
When light of wavelength 3000 Å is incident on
the metal surface, photoemission of electrons oc-
curs. Maximum speed of emitted photoelectrons is
approximately
(133)
(1) 420 km/s
(2) 540 km/s
(3) 600 km/s
14) 842 km/s​

Answer 1

Explanation:

calculation is needed

continue from here