Q.

The reverse effect of X-ray emission is

A. Raman effect
B. Compton effect
C. Zeeman effect
D. Photoelectric
Answer» D. Photoelectric
Explanation: When fast moving electrons strike on high atomic weight substance, X - ray is produced. In contrast, Photoelectric effect takes place when radiation of sufficient frequency incident on the metal surface and electrons are emitted. Hence, X ray is the inverse phenomenon of photoelectric effect.
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