X-rays are:
Correct answer: B. High velocity invisible rays
- A. Low velocity invisible rays
- B. High velocity invisible rays
- C. High velocity visible rays
- D. Low velocity visible rays
Explanation
X-rays are high-frequency electromagnetic radiations having wavelengths between 0.01-10 nm, way beyond the visible range that is between 400 and 700 nm, which makes them invisible. As they are electromagnetic waves, their velocity is very high.
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