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प्रश्न
What value is given for the speed of light?
पर्याय
\[1.602 \times 10^{-19}\ \text{m/s}\]
\[3 \times 10^6\ \text{m/s}\]
\[3 \times 10^8\ \text{m/s}\]
\[1.76 \times 10^{11}\ \text{m/s}\]
MCQ
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उत्तर
The speed of light is \[3 \times 10^8\ \text{m/s}\]. Cathode ray particle speeds were compared with this value.
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