science
Grade-7
Easy
Question
The speed of light is ___ x 108 m/s.
Hint:
Light is made of electromagnetic waves and it travels at that speed, because that is exactly how quickly waves of electricity and magnetism travel through space.
The correct answer is: 3
- Light is made of electromagnetic waves and it travels at the same speed as electromagnetic waves, because that is exactly how quickly waves of electricity and magnetism travel through space.
- The speed of light is measured to have the same value of c = 3x108 m/s no matter who measures it.
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