Explanation:
X-rays have high penetrating power, which allows them to pass through soft tissues and be used in medical imaging (like X-rays of bones).
Why are the other options true?
(A) Can affect photographic plates → ✅ True
- X-rays darken photographic plates, which is why they are used in medical imaging.
(B) Can be reflected or refracted → ✅ True
- Though X-rays are mostly absorbed or transmitted, they can undergo reflection and refraction under specific conditions (like in X-ray crystallography).
(D) Travel with the speed of light → ✅ True
- X-rays are a type of electromagnetic radiation, so they travel at the speed of light (≈ 3 × 10⁸ m/s in a vacuum).
Thus, the incorrect statement is (C) X-rays have low penetrating power because X-rays actually have high penetrating power.
Explanation by: Mr. Dubey
X-rays have high penetrating power, which allows them to pass through soft tissues and be used in medical imaging (like X-rays of bones).
Why are the other options true?
(A) Can affect photographic plates → ✅ True
- X-rays darken photographic plates, which is why they are used in medical imaging.
(B) Can be reflected or refracted → ✅ True
- Though X-rays are mostly absorbed or transmitted, they can undergo reflection and refraction under specific conditions (like in X-ray crystallography).
(D) Travel with the speed of light → ✅ True
- X-rays are a type of electromagnetic radiation, so they travel at the speed of light (≈ 3 × 10⁸ m/s in a vacuum).
Thus, the incorrect statement is (C) X-rays have low penetrating power because X-rays actually have high penetrating power.