Question

A monochromatic light of frequency 3×10^15 Hz is incident on a metal surface work function 4 eV and photo electrons are emitted. Given h=6.6×10^-34 Js, me=9.1×10^-31 kg.
The energy of the incident photons is
a)19.8×10^-19 J
b)20.4×10^-19 J
c)14.7×10^-19 J
d)81.7×10^-19 J​

Answer 1

Answer:

A monochromatic light of frequency 3×10^15 Hz is incident on a metal surface work function 4 eV and photo electrons are emitted. Given h=6.6×10^-34 Js, me=9.1×10^-31 kg.

The energy of the incident photons is

• a)19.8×10^-19 J

b)20.4×10^-19 J

c)14.7×10^-19 J

d)81.7×10^-19 J

Answer 2

Answer:

hope it's helpful for you

pls mark me as brainlist with following me