If Professor Joe were to be traveling at the speed of light holding this meter (100cm) stick, what length of the meter stick would be seen by an outside observer?
greater than 100cm
less than 100cm
100cm
0cm
Ans- 0cm
This is the general thing that when a body moves then its length seems to be shortened. But when an object moves in the speed of light i.e. 3*108m/s we can't see it. As we can't see that object it will seem to be of zero length.
Here the length of the stick is only 100cm. This is very less. So when it will move in the speed of light we can't notice it, so its length seems to be 0.
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