हिंदी

Which physical quantity is the same for UV rays, red light and radio waves when they are travelling in vacuum?

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प्रश्न

Which physical quantity is the same for UV rays, red light and radio waves when they are travelling in vacuum?

एक शब्द/वाक्यांश उत्तर
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उत्तर

Speed (the speed of light) or Velocity

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