GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The speed of light is ____
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300, 000 km per second
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500, 000 km per second
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100, 000 km per second
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10 km per seconfd
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Explanation:
Detailed explanation-1: -Light from a stationary source travels at 300, 000 km/sec (186, 000 miles/sec).
Detailed explanation-2: -It is speed. As in velocity, the direction of the movement is also mentioned. ∴ The speed of light is 300, 000 km/s.
Detailed explanation-3: -Light moves at a velocity of about 300, 000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9, 500, 000, 000, 000 kilometers. Why would you want such a big unit of distance?
Detailed explanation-4: -Light moves the fastest in vacuum (About 300, 000 kilometers per second). The greater the density of a medium, the slower the speed becomes.
There is 1 question to complete.