## 1B3

$c=\lambda v$

Joseph Saba
Posts: 154
Joined: Thu Jul 11, 2019 12:16 am

### 1B3

Which supports the idea that electromagnetic radiation has the properties of particles?
b. electron diffraction
c. atomic spectra
d. photoelectric effect

Gerald Bernal1I
Posts: 102
Joined: Thu Jul 11, 2019 12:16 am

### Re: 1B3

It should be photoelectric effect since it showed that light has discrete amount of energies called photons. It showed that no matter how the amplitude changed, the energy was still the same, but when the frequency was changed, the wavelength, it was able to displace electrons.

Kate Osborne 1H
Posts: 102
Joined: Fri Aug 30, 2019 12:16 am

### Re: 1B3

Yes, photoelectric effect is correct because if light only had wave properties, increasing the amplitude should eject more electrons, but that was not the case as the only thing that increased the amount of electrons ejected was increasing frequency/decreasing wavelength.

Emily Chirila 2E
Posts: 112
Joined: Sat Jul 20, 2019 12:16 am

### Re: 1B3

The explanation for why photoelectric effect is correct would be because when an ultraviolet radiation source shines light on a metal surface, it causes an emission of e-. Thus the light is similar to a stream of particles.