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प्रश्न
The speed of light in air is :
विकल्प
3 x 108 m s-1
330 m s-1
5100 m s-1
3 x 1010 m s-1
उत्तर
The speed of light in air is : 3 x 108 m s-1
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संबंधित प्रश्न
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