what is photoelectric effect
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Answer:
photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.
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Explanation:
. Light can strike the surface of some metals causing an electron to be ejected
. No matter how brightly the light shines, electrons are ejected only if the light has sufficient energy
(sufficiently short wavelength)
. After the necessary energy is reached, the current (# electrons emitted per second) increases as the intensity (brightness) of the light increases
- The current, however, does not depend on the wavelength 1
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