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प्रश्न
A light wave can travel
(a) in vacuum
(b) in vacuum only
(c) in a material medium
(d) in a material medium only
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उत्तर
(a) in vacuum
(c) in a material medium
Light is an electromagnetic wave that can travel through vacuum or any optical medium.
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संबंधित प्रश्न
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Answer in brief:
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