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प्रश्न
The speed of light in vacuum is ______.
पर्याय
$$3 \times 10^6\text{ ms}^{-1}$$
$$3 \times 10^7\text{ ms}^{-1}$$
$$3 \times 10^8\text{ ms}^{-1}$$
$$3 \times 10^10\text{ ms}^{-1}$$
MCQ
रिकाम्या जागा भरा
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उत्तर
The speed of light in vacuum is `bbunderline{3 xx 10^8 ms^{-1}`.
Explanation:
The speed of light in vacuum is a universal physical constant equal to approximately $$3 \times 10^8\text{ ms}^{-1}$$. The other choices have incorrect powers of 10.
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