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 3×108 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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