X-rays are electromagnetic waves like________________?
Correct answer: D. γ-rays
- A. Light waves
- B. Heat waves
- C. Microwaves
- D. γ-rays
Explanation
X-rays and gamma rays are both high-frequency electromagnetic waves and differ mainly by their origin, not by their basic nature. Light, heat and microwaves are also electromagnetic, but gamma rays are the closest comparison in the usual radiation classification and match the intended answer.
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About Electromagnetic Waves
Electromagnetic waves consist of mutually perpendicular, oscillating electric and magnetic fields that also remain perpendicular to the direction of propagation. They travel through vacuum at the speed of light and include radio waves, microwaves, infrared, visible, ultraviolet, X-rays and gamma rays. Unlike mechanical waves, they do not require a material medium.
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