2020 · Q8
Which one of the following is not a property of the X-rays?
General KnowledgePhysics
- AThey are deflected by electric fields.
- BThey are not deflected by magnetic fields.
- CThey have high penetration length in matter.
- DTheir wavelength is much smaller than that of visible light.
Explanation
X-rays are electromagnetic waves and carry no electric charge. Uncharged radiation is not deflected by either electric or magnetic fields. Statement A claims X-rays are deflected by electric fields, which is false, so it is not a property of X-rays. Statements B (not deflected by magnetic fields), C (high penetration) and D (wavelength much smaller than visible light) are all true properties. Hence A.