Which of the following rays are not electromagnetic waves ?

Physics Electromagnetic Wave General MCQ (Single Correct)

β – rays

Heat rays

X- rays

γ –rays

Text Solution

Verified by Experts

The correct answer is:

β – rays are fast moving electrons. So, they are not electromagnetic wave

Heat rays can travel through vacuum via radiation process. They are electromagnetic waves.

X-rays are electromagnetic waves having wavelengths from about 10 –8 m to 10 –12 m.

γ –rays are electromagnetic waves having wavelengths ranging from about 10 –16 m to 10 –14 m.

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