Physics · Optics
In which of the following mediums is the speed of light approximately 3 × 10⁸ m/s?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Vacuum✓
- 2Water
- 3Turpentine oil
- 4Glass
Correct answer
Vacuum
Explanation
सही उत्तर:
- (D) निर्वात
स्पष्टीकरण:
प्रकाश की चाल: निर्वात (Vacuum) में प्रकाश की गति सर्वाधिक होती है, जिसका मानक मान लगभग
10
मी/से
3×10
मी/से होता है।
जल, कांच या अन्य माध्यमों में कणों के प्रतिरोध के कारण प्रकाश का वेग इससे कम हो जाता है।
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