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प्रश्न
How are mechanical waves different from electromagnetic waves?
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उत्तर
| Electromagnetic waves | Mechanical waves |
| They can travel in vacuum. | They cannot travel in vaccum. They need a material medium for their propagation. |
| These are formed by the periodic vibrations of mutually perpendicular electric and | These are formed by the vibrations of the medium particles about their mean positions. These vibrations can be along the direction of propagation of wave or perpendicular to it. |
| These are traverse in nature. | These waves can be transverse as well as longitudinal. |
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