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Define (i) Photo–electric effect (ii) Black body radiations. |
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Answer» ectric effect:When LIGHT HITS a metal surface, an electrical potential can be generated. This is KNOWN as photoelectric effect. This concept is used to produce electricity from light energy directly. Working of solar panels is based on this concept as a source of power and also used as a light source for our homes.Blackbody RADIATION:The term black body radiation or cavity radiation denotes to an object or body that ABSORBS all radiation incidents and re-radiates energy which is the only characteristic of this radiation system, not dependent on the type of radiation that occurs. |
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