Photoelectric effect

Front

A particle of light is called a...

Back

Photon

Front

The special theory of relativity was derived by:

Back

Einstein

Front

How does Einstein's explanation of the photoelectric effect differ from classical physics?

Back

Einstein introduced the concept of photons and quantized energy levels.

Front

What color of light has the greatest energy per photon?

Back

Violet

Front

The speed of light (c) =

Back

3 x 10^8 meters/second

Front

What is the photoelectric effect?

Back

The emission of electrons from a material when it absorbs light.

Front

What is the threshold frequency in the photoelectric effect?

Back

The minimum frequency of light required to eject electrons from a material.

Front

What happens to the kinetic energy of emitted electrons as the frequency of incident light increases?

Back

The kinetic energy increases with the frequency of the incident light.

Front

What is the relationship between energy and frequency of a photon?

Back

Energy (E) is directly proportional to frequency (f): E = hf, where h is Planck's constant.

Front

What is Planck's constant?

Back

A fundamental constant (h = 6.626 x 10^-34 J·s) that relates energy and frequency.