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Metal surfaces on spacecraft in bright sunlight develop a net electric charge. Do they develop a negative or a positive charge?

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6 years ago

Date created

Mar 1, 2020

Cards (9)

Section 1

(9 cards)

Metal surfaces on spacecraft in bright sunlight develop a net electric charge. Do they develop a negative or a positive charge?

Front

positive

Back

Do the molecules in a red cone (which are tuned to absorb red light) or the molecules in a blue cone (tuned to absorb blue light) have a longer "box"?

Front

molecules in a red cone

Back

In another experiment, the intensity of the incident light and the temperature of the metal are held constant. Assuming that the initial light incident on the metal surface causes electrons to be ejected from the metal, what happens if the frequency of the incident light is increased?

Front

The maximum speed of the emitted electrons increases. The stopping potential increases.

Back

In a particular experiment to study the photoelectric effect, the frequency of the incident light and the temperature of the metal are held constant. Assuming that the light incident on the metal surface causes electrons to be ejected from the metal, what happens if the intensity of the incident light is increased?

Front

The number of electrons emitted from the metal per second increases.

Back

How does the de Broglie wavelength of an electron change if its kinetic energy decreases?

Front

The de Broglie wavelength of the electron increases.

Back

In a photoelectric effect experiment, the frequency of the light is increased while the intensity is held constant.As a result,

Front

The electrons are faster.

Back

How does the de Broglie wavelength of an electron change if its momentum increases?

Front

The de Broglie wavelength of the electron decreases

Back

In the photoelectric effect, electrons are never emitted from a metal if the frequency of the incoming light is below a certain threshold value.

Front

Photons of lower-frequency light don't have enough energy to eject an electron.

Back

In a photoelectric effect experiment, the intensity of the light is increased while the frequency is held constant.As a result,

Front

There are more photoelectrons.

Back