The ejection of electrons when a metal surface is irradiated is known as
A. Black body radiation
B. Photoelectric effect
C. Zeeman effect
D. Atomic spectrum
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photoelectric effect
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All objects with a temperature above absolute zero (0 K, -273.15 oC) emit energy in the form of electromagnetic radiation. A blackbody is a theoretical or model body which absorbs all radiation falling on it, reflecting or transmitting none.
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