[单选题]
A monochromatic light is incident on the s/,vjs+nq8;m4mp l ptr1y4ai lurface of a metal with work functionap3hjsjt:/b 81kk5 re.b bb1x 2.50 eV. If a 1.0-V stopping potential is required to make the photocurrent zero, what is the1hpke t .rb/sj13a 5 x8bbbj:k wavelength of light?
A. $354 \; nm$
B. $423 \; nm$
C. $497 \; nm$
D. $744 \; nm$
Post time 2024-1-22 00:41:22