MCQ
हवा (निर्वात) में प्रकाश की चाल होती है
  • $3 \times 10^{8} \mathrm{m} / \mathrm{sec}$
  • B
    $3 \times 10^{8} \mathrm{cm} / \mathrm{sec}$
  • C
    $3 \times 10^{8} \mathrm{km} / \mathrm{sec}$
  • D
    $3 \times 10^{8} \mathrm{mm} / \mathrm{sec}$

Answer

Correct option: A.
$3 \times 10^{8} \mathrm{m} / \mathrm{sec}$
a

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