Q. Roentgen discovered

A
X-rays
B
Encephalograph
C
Anti-Polio Vaccine
D
None of these
Solution:

X-rays were discovered in 1895 by Wilhelm Conrad Roentgen (1845-1923) who was a Professor at Wuerzburg University in Germany. Working with a cathode-ray tube in his laboratory, Roentgen observed a fluorescent glow of crystals on a table near his tube.

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