Which of the following is not true about X-rays?
A. Have low penetrating power
B. Travel with the speed of light
C. Can be reflected or refracted
D. Can affect photographic plates
Answer: Option A
Solution (By Examveda Team)
X-rays and gamma rays are photons, i.e. high energy light-waves. When emitted by a source, for example, radium or cobalt, located outside the body, they easily pass through the body, hence they are usually called penetrating radiation. Because X-rays are penetrating, they can be used in diagnostic medicine to image human bones or human organs made opaque by a dye.This Question Belongs to General Knowledge >> Physics
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