Which of the following has greater speed in space?
Correct answer: D. All of these
- A. Gamma rays
- B. Light
- C. Radio waves
- D. All of these
Explanation
All of the above waves belong to electromagnetic waves. In space, electromagnetic waves travel at the same speed which is the speed of light C = 3.8*108 ms-1.
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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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