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प्रश्न
Why can electromagnetic waves propagate through a vacuum?
पर्याय
They require a material medium for propagation.
Their frequency changes in a vacuum.
They are non-mechanical waves that do not require a material medium.
They are produced by stationary charges in a vacuum.
MCQ
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उत्तर
Electromagnetic waves are non-mechanical and need no material medium for propagation. They can therefore travel through a vacuum.
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