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      Question

      Speed of light is about __________.

      A 30,00,000 km/s Correct Answer Incorrect Answer
      B 3,00,000 m/s Correct Answer Incorrect Answer
      C 30,00,000 m/s Correct Answer Incorrect Answer
      D 3,00,000 km/s Correct Answer Incorrect Answer

      Solution

      The speed of light in vacuum is 3Γ—108 m/s. Sunlight takes about 8 minutes to reach the Earth. Express distance of the Sun from Earth in standard form.

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