Multiple choice general knowledge

A ray which we cannot draw???

  1. Rainbow

  2. right angle

  3. Obtuse angle

  4. X-ray
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

X-rays are invisible electromagnetic radiation that cannot be drawn with a pen. A rainbow is an optical phenomenon we can depict, and angles are geometric lines we can draw. X-rays require special equipment to detect.

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