Physics · Optics
निर्वात में प्रकाश की चाल कितनी होती है?
- 13 × 10^6 मीटर/सेकंड
- 23 × 10^8 मीटर/सेकंड✓
- 33 × 10^10 मीटर/सेकंड
- 43 × 10^5 मीटर/सेकंड
सही उत्तर देखें
3 × 10^8 मीटर/सेकंड
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