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2. | If an object reaches the speed of light, it’s length changes to? | |
A. | Infinite | |
B. | Double of the value | |
C. | Half of the value | |
D. | Zero | |
Answer: Option D | |
Explanation: | |
We know, l = l0 √1−v2c2. Thus, as v tends to c, the length of the rod in motion reduces to zero, which is physically impossible. |
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