Dino Nuggets Review #8.a)

Daniel Yu 1E
Posts: 100
Joined: Sat Aug 24, 2019 12:15 am

Dino Nuggets Review #8.a)

What did you all put as your response to #8 part a on the Midterm Review?
Q: Write an equation using words only that captures the conservation of energy in the photoelectric effect. Describe the conceptual change that arose from the photoelectric experiment and discuss how intensity plays a role.

Bilal Pandit 1J
Posts: 98
Joined: Wed Sep 11, 2019 12:16 am

Re: Dino Nuggets Review #8.a)

Essentially energy is conserved throughout the entire experiment, as the energy of the photon equals the work equation and the energy of the electron ejected. That means that the energy is conserved throughout the reaction. In reference to the conceptual change, photons were no longer only looked as just waves, but rather a combination of a wave and particle properties. This was because increasing intensity did not result in the photons having more energy, as increasing the intensity did not eject electrons unless the frequency was changed. If photons were a wave, then intensity would increase the energy of the photons but they didnt.

Julie Park 1G
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

Re: Dino Nuggets Review #8.a)

The conservation of energy concept refers to this equation:
$E_{photon} - \Phi= E_{kinetic}$
aka
Energy of photon - threshold energy = electron kinetic energy