Question

no spam ❌⭕❌⭕❌⭕❌⭕❌⭕❌⭕❌⭕❌⭕❌⭕❌
no lazy answers...
short answers will be reported!!
answer all.
deleting account shortly......

Answer 1

here is u r answer
it's help u..

...................


maximum kinetic energy it is u r answer.because in photo electronic transmission depend on size.


ok

Answer 2

Sorry for wrong answer . Here is your answer:

(a) K.E. = (hc / lambda) – phi0
= (1242 ev-nm/ 280 nm) – 2.5 ev
= 1.9 ev
(b) stopping potential is given by
ev = K.E.max
V = 1.9 ev / e
= 1.9 Volt

If not understanding pls see the image