MCQ
Which of the following cannot travel in vacuum?
- ARadio waves
- BGamma Waves
- CInfrared Waves
- ✓Infrasonic waves
✓
Answer
Correct option: D.
Infrasonic waves
Radio waves, gamma waves, and infrared waves are electromagnetic waves and due to this they do not need any material medium to travel and hence, can travel in vacuum. Whereas, infrasonic waves are mechanical waves and so, they need a material medium to travel. Therefore, infrasonic waves cannot travel in vacuum.
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